Barbecue grill

Barbecue grill
Food cooking on a charcoal grill

A barbecue grill is a device for cooking food by applying heat directly from below. There are several varieties of such grills, with most falling into one of two categories: gas-fueled and charcoal. There is a great debate over the merits of charcoal or gas for use as the cooking method between barbecue grillers.

Barbecuing is a pervasive tradition in much of the world. Almost all competition grillers use charcoal, most often in large, custom designed brick or steel grills. They can range from a few 55 gallon oil drums sawed lengthwise on their sides to make a lid and grill base, to large, vehicle sized grills made of brick, weighing nearly a ton.


History in the USA

Grilling existed in the Americas since pre-colonial times. The Arawak people used a wooden structure to roast meat on, which was called barbacoa in Spanish. For some time, the word referred to the wooden structure and not the act of grilling, but this word was eventually applied to the pit style cooking techniques used in the Southeastern United States. Originally used to slow cook hogs, different ways of preparing the food lead to regional variations.[1] In time, other food were cooked in a similar fashion, with hamburgers and hot dogs being recent additions.[2][3]

E.G. Kingsford is the inventor of the modern charcoal briquette. Kingsford was a relative of Henry Ford who saw that Ford's Model T production lines were producing a large amount of wood scraps that were just being discarded. Kingsford suggested to Ford that a charcoal manufacturing facility be established next to the assembly line and sell the charcoal, with the Ford name, in Ford dealerships. After Kingsford's death, the company was renamed Kingsford Charcoal Co. in his honor.[4]

George Stephen[5] created the hemispherical grill design, jokingly called "Sputnik" by Stephen's neighbors. Stephen, a welder, worked for Weber Brothers Metal Works, a metal fabrication shop primarily concerned with welding steel spheres together to make buoys. Stephen was tired of wind blowing ash onto his food when he grilled so he took the lower half of a buoy, welded three steel legs onto it, and fabricated a shallower hemisphere for use as a lid. He took the results home and following some initial success started the Weber-Stephen Products Co.

The outdoor gas grill was invented in the 1960s[6] in Little Rock, Arkansas by William G. Wepfer and Melton Lancaster while working for ARKLA, the Arkansas Louisiana Gas Company. Wepfer, a graduate of the U.S.Naval Academy, was Director of Marketing, charged with finding new ways to sell natural gas to ARKLA residential customers, and therefore bought a basic charcoal grill and re-designed it in the Wepfer's garage so that natural gas provided the fuel for the grill.

Gas grills

A single-burner propane gas grill that conforms to the cart grill design common among gas grills.

Gas-fueled grills typically use propane (LP) or natural gas (NG) as their fuel source, with gas-flame either cooking food directly or heating grilling elements which in turn radiate the heat necessary to cook food. Gas grills are available in sizes ranging from small, single steak grills up to large, industrial sized restaurant grills which are able to cook enough meat to feed a hundred or more people. Gas grills are designed for either LP or NG, although it's possible to convert a grill from one gas source to another.

The majority of gas grills follow the cart grill design concept: the grill unit itself is attached to a wheeled frame that holds the fuel tank. The wheeled frame may also support side tables and other features.

A recent trend in gas grills is for the manufacturers to add an infrared radiant burner to the back of the grill enclosure. This radiant burner provides an even heat across the burner and is intended for use with a horizontal rotisserie. A meat item (whole chicken, beef roast, pork loin roast) is placed on a metal skewer that is rotated by an electric motor. Smaller cuts of meat can be grilled in this manner using a round metal basket that slips over the metal skewer.

Another type of gas grill gaining popularity is called a flattop grill. According to Hearth and Home magazine, flattop grills "on which food cooks on a griddlelike surface and is not exposed to an open flame at all" is an emerging trend in the outdoor grilling market.[7]

A small metal "smoker box" containing wood chips may be used on a gas grill to give a smoky flavor to the grilled foods. Although, barbecue purists would argue that to get a true smoky flavor (and smoke ring) you have to cook low and slow, indirectly and using wood or charcoal. According to The Gas Grill Review and Ratings Guide, gas grills are difficult to maintain at the low temperatures required (~225-250 °F), especially for extended periods.[8]

Brazilian rodízio

The Brazilian Rodizio Machine Gas Grill, is a heavy duty spitroast machine for making the popular Brazilian "rodízio". It works with top radiant gas burners which roasts the meat in rotating spits.

Infrared grills

An ignited Infrared grill burner, only seeing the visible light spectrum.

Infrared grills work by igniting propane or natural gas to superheat a ceramic tile, causing it to emit infrared radiation by which the food is cooked. The thermal radiation is generated when heat from the movement of charged particles within atoms is converted to electromagnetic radiation in the infrared heat frequency range. The benefits are that heat is uniformly distributed across the cooking surface and that temperatures reach over 500 °C (900 °F), allowing users to sear items quickly.

Infrared cooking differs from other forms of grilling, which uses hot air to cook the food. Instead of heating the air, infrared radiation heats the food directly. The benefits of this are a reduction in pre-heat time and less drying of the food. Grilling enthusiasts claim food cooked on an infrared grill tastes similar to food from char-grills. Proponents say that food cooked on infrared grills seems juicier. Also, infrared grills have the advantages of instant ignition, better heat control, and a uniform heat source.

This technology was previously patented, but the patents expired in 2000 and more companies have started offering infrared grills at lower prices.


Charcoal grills use either charcoal briquettes or all-natural lump charcoal as their fuel source. The charcoal, when burned, will transform into embers radiating the heat necessary to cook food.

There is contention among grilling enthusiasts on what type of charcoal is best for grilling. Users of charcoal briquettes emphasize the uniformity in size, burn rate, heat creation, and quality exemplified by briquettes. Users of all-natural lump charcoal emphasize the reasons they prefer it: subtle smoky aromas, high heat production, and lack of binders and fillers often present in briquettes.

There are many different charcoal grill configurations. Some grills are square, round, or rectangular, some have lids while others do not, and some may or may not have a venting system for heat control. The majority of charcoal grills, however, fall into the following categories:


A brazier grill loaded with fresh charcoal briquettes.

The simplest and most inexpensive of charcoal grills, the brazier grill is made of wire and sheet metal and composed of a cooking grid placed over a charcoal pan. Usually the grill is supported by legs attached to the charcoal pan. The brazier grill does not have a lid or venting system. Heat is adjusted by moving the cooking grid up or down over the charcoal pan. Even after George Stephen invented the kettle grill in the early 1950s, the brazier grill remained a dominant charcoal grill type for a number of years. Brazier grills are available at most discount department stores during the summer.

Pellet grill

Pellet grills are fueled by compressed hardwood pellets (sawdust compressed with vegetable oil at approx. 10k psi) that are loaded into a hopper and fed into a fire box at the bottom of the grill via an electric powered auger that is controlled by a thermostat. The pellets are lit by an electric igniter rod that starts the pellets burning and they turn into coals in the firebox once they burn down. Most pellet grills are a barrel shape with a square hopper box at the end or side.

The advantage of a pellet grill is that it can be set on a "smoke" mode where it burns at 100–150 °F (38–66 °C) for slow smoking. It can be set at 180–300 °F (82–149 °C) to slow cook or BBQ meats (like brisket, ribs and hams) or cranked up to a max of 450–500 °F (232–260 °C) for what would be considered low temperature grilling. It is one of the few "grills" that is actually a great smoker, a fantastic BBQ and a decent grill. Critics argue that a good "grill" should be able to exceed 500 °F (260 °C) to sear the meat.

Most pellet grills burn 1/2 to 1 pound of pellets per hour at 180–250 °F (82–121 °C), depending on the "hardness" of the wood, ambient temperature and how often the lid is opened. Most hoppers hold 10 to 20 pounds of wood pellets. Pellets in a wide variety of woods (hickory, oak, maple, apple, alder, mesquite, grapevine, etc.) can be used or mixed for desired smoke flavoring.

Square charcoal

The square charcoal grill is a hybrid of the brazier and the kettle grill. It has a shallow pan like the brazier and normally a simple method of adjusting the heat, if any. However, it has a lid like a kettle grill and basic adjustable vents. The square charcoal grille is, as expected, priced between the brazier and kettle grill, with the most basic models priced around the same as the most expensive braziers and the most expensive models competing with basic kettle grills. These grills are available at discount stores and have largely displaced most larger braziers. Square charcoal grills almost exclusively have four legs with two wheels on the back so the grill can be tilted back using the handles for the lid to roll the grill. More expensive examples have baskets and shelves mounted on the grill.

Shichirin (Hibachi)

Various Japanese traditional Shichirin (Tokyo Egota), Made from diatomite.

The traditional Japanese hibachi is a heating device and not usually used for cooking. In English, however, "hibachi" often refers to small cooking grills typically made of aluminium or cast iron, with the latter generally being of higher quality. Owing to their small size, hibachi grills are popular as a form of portable barbecue. They resemble traditional, Japanese, charcoal-heated cooking utensils called shichirin. About this sound click here to listen to the pronunciation of "Shichirin"

Alternatively, "hibachi-style" is often confused in the U.S. as a term for Japanese teppanyaki cooking, in which gas-heated hotplates are integrated into tables around which many people (often multiple parties) can sit and eat at once. The chef performs the cooking in front of the diners, typically with theatrical flair—such as lighting a volcano-shaped stack of raw onion hoops on fire.

In its most common form, the hibachi is an inexpensive grill made of either sheet steel or cast iron and composed of a charcoal pan and two small, independent cooking grids. Like the brazier grill, heat is adjusted by moving the cooking grids up and down. Also like the brazier grill, the hibachi does not have a lid. Some hibachi designs have venting systems for heat control. The hibachi is a good grill choice for those who do not have much space for a larger grill, or those who wish to take their grill traveling. Binchō-tan is most suitable for fuel of shichirin.


Two charcoal kettle grills, a small 18 inches (460 mm) tabletop model, and a freestanding 22.5 inches (570 mm) model.

The kettle grill is considered the classic American grill design[citation needed]. The original and often-copied Weber kettle grill was invented in 1951 by George Stephen. It has remained one of the most commercially successful charcoal grill designs to date[citation needed]. Smaller and more portable versions exist, such as the Weber Smokey Joe. The kettle grill is composed of a lid, cooking grid, charcoal grid, lower chamber, venting system, and legs. Some models include an ash catcher pan and wheels. The lower chamber that holds the charcoal is shaped like a kettle, giving the grill its name. The key to the kettle grills' cooking abilities is its shape. The kettle design distributes heat more evenly. When the lid is placed on the grill, it prevents flare-ups from dripping grease, and allows heat to circulate around the food as it cooks. It also holds in flavor-enhancing smoke produced by the dripping grease or from smoking wood added to the charcoal fire.

The Weber kettle grill has bottom vents that also dispatch ash into a pan below the bowl. Most kettle grills can be adapted for indirect cooking.

The kettle design allows the griller to configure the grill for indirect cooking (or barbecuing) as well. For indirect cooking, charcoal is piled on one or both sides of the lower chamber and a water pan is placed in the empty space to one side or between the charcoal. Food is then placed over the water pan for cooking. The venting system consists of one or more vents in the bottom of the lower chamber and one or more vents in the top of the lid. Normally, the lower vent(s) are to be left open until cooking is complete, and the vent(s) in the lid are adjusted to control airflow. Restricted airflow means lower cooking temperature and slower burning of charcoal.


The charcoal cart grill is quite similar in appearance to a typical gas grill. The cart grill is usually rectangular in design, has a hinged lid, cooking grid, charcoal grid, and is mounted to a cart with wheels and side tables. Most cart grills have a way to adjust heat, either through moving the cooking surface up, the charcoal pan down, through venting, or a combination of the three. Cart grills often have an ash collection drawer for easy removal of ashes while cooking. Their rectangular design makes them usable for indirect cooking as well. Charcoal cart grills, with all their features, can make charcoal grilling nearly as convenient as gas grilling. Cart grills can also be quite expensive.


In its most primitive form, the barrel grill is nothing more than a 55 US gallons (210 l; 46 imp gal) steel barrel sliced in half lengthwise. Hinges are attached so the top half forms the lid and the bottom half forms the charcoal chamber. Vents are cut into the top and bottom for airflow control. A chimney is normally attached to the lid. Charcoal grids and cooking grids are installed in the bottom half of the grill, and legs are attached. Like kettle grills, barrel grills work well for grilling as well as true barbecuing. For barbecuing, lit charcoal is piled at one end of the barrel and food to be cooked is placed at the other. With the lid closed, heat can then be controlled with vents. Fancier designs available at stores may have other features, but the same basic design does not change.

Ceramic cooker

The ceramic cooker design has been around for roughly 3,000 years[citation needed]. The shichirin, a Japanese grill traditionally of ceramic construction, has existed in its current form since the Edo period however more recent designs have been influenced by the mushikamado now more commonly referred to as a kamado. Recently, the kamado ceramic cooker design has been made popular by the Grill Dome, Komodo Kamado, The Big Green Egg, and Primo. The ceramic cooker is more versatile than the kettle grill but the ceramic chamber retains heat and moisture more efficiently. Ceramic cookers are equally adept at grilling, smoking, and barbecuing foods.

Tandoor oven

A tandoor is used for cooking certain types of Irani, Indian and Pakistani food, such as tandoori chicken. It is also known as a tonir in Armenian which is a widely used method of cooking barbecue. In Georgia it is called a tone and is used for cooking kebabs. In a tandoor, the wood fire is kept in the bottom of the oven and the food to be cooked is put on long skewers and inserted into the oven from an opening on the top so the meat items are above the coals of the fire. This method of cooking involves both grilling and oven cooking as the meat item to be cooked sees both high direct infrared heat and the heat of the air in the oven. Tandoor ovens often operate at temperatures above 500 °F (260 °C) and cook the meat items very quickly.

Portable charcoal

Portable charcoal grills are small but convenient for traveling, picnicking, and camping. This one is loaded with lump charcoal. The legs fold up and lock onto the lid so it can be carried by the lid handle.

The portable charcoal grill normally falls into either the brazier or kettle grill category. Some are rectangular in shape. A portable charcoal grill is usually quite compact and has features that make it easier to transport, making it a popular grill for tailgating. Often the legs fold up and lock into place so the grill will fit into a car trunk more easily. Most portable charcoal grills have venting, legs, and lids, though some models do not have lids (making them, technically, braziers.) There are also grill designed without venting to prevent ash fallout for use in locations which ash may damage ground surfaces. Some portable grills are designed to replicate the function of a larger more traditional grill/brazier and may include spit roasting as well as a hood and additional grill areas under the hood area.


A hybrid grill is a grill used for outdoor cooking with charcoal and natural gas or liquid propane and can cook in the same manner as a traditional outdoor gas grill. The manufacturers claim that it combines the convenience of an outdoor gas grill with the flavor and cooking techniques of a charcoal and wood grill.

In addition to providing the cooking heat, the gas burners in a hybrid grill can be used to quickly start a charcoal/wood fire or to extend the length of a charcoal/wood cooking session.


Many gas grill components can be replaced with new parts, adding to the useful life of the grill. Though charcoal grills can sometimes require new cooking grids and charcoal grates, gas grills are much more complex, and require additional components such as burners, valves, and heat shields.


A gas grill burner is the central source of heat for cooking food. Gas grill burners are typically constructed of:

  • stainless steel
  • aluminized steel
  • cast iron (occasionally porcelain-coated)

Burners are hollow with gas inlet holes and outlet 'ports'. For each inlet is a separate control on the control panel of the grill. The most common type of gas grill burners are called 'H' burners and resemble the capital letter 'H' turned on its side. Another popular shape is oval. There are also 'Figure 8', 'Bowtie' and 'Bar' burners. Other grills have a separate burner for each control. These burners can be referred to as 'Pipe', 'Tube', or 'Rail' burners. They are mostly straight since they are only required to heat one portion of the grill.

Gas is mixed with air in venturi tubes or simply 'venturis'. Venturis can be permanently attached to the burner or removable. At the other end of the venturi is the gas valve, which is connected to the control knob on the front of the grill.

A metal screen covers the fresh air intake of each venturi to keep spiders from clogging the tube with their nests.

Cooking grid

Cooking grids, also known as cooking grates, are the surface on which the food is cooked in a grill. They are typically made of:

  • Stainless steel (Usually the most expensive and longest-lasting option, may carry a lifetime warranty)
  • Porcelain-coated cast iron (The next best option after stainless, usually thick and good for searing meat)
  • Porcelain-coated steel (Will typically last as long as porcelain-coated cast iron, but not as good for searing)
  • Cast iron (More commonly used for charcoal grills, cast iron must be constantly covered with oil to protect it from rusting)
  • Chrome-plated steel (Usually the least expensive and shortest-lasting material)

Cooking grids used over gas or charcoal barbecues will allow fat and oil to drop between the grill bars, which will cause flare up where flames can burn and blacken food long before it is safely cooked.

To reduce the occurrence of flare up, some barbecues may be fitted with plates, baffles or other means to intercept the dripping flammable fluids.

Most high end barbecue grills use stainless steel grates, but there is a health benefit to using bare cast iron grids. When cast iron is used to cook food containing high level of acidity, such as lentils, tomatoes, lemonade sauces, or marinades with strong vinegar content, there is increased iron dietary intake.[9]

According to the Centers for Disease Control and Prevention, iron and iron deficiency is a particularly important issue for pregnant women and young children.[10]

The longer and hotter the grilling temperature, the more iron is infused into the food. This process can only take place with plain cast iron grids - without any form of porcelain or other types of coating. The downside to bare cast iron is that it sticks to the food and can be hard to clean.

Rock grate

Rock grates are placed directly above the burner and are designed to hold lava rock or ceramic briquettes. These materials serve a dual purpose - they protect the burner from drippings which can accelerate the deterioration of the burner, and they disperse the heat from the burner more evenly throughout the grill.

Heat shield

Heat shields are also known as burner shields, heat plates, heat tents, radiation shields, or heat angles. They serve the same purpose as a rock grate and rock, protecting the burner from corrosive meat drippings and dispersing heat. They are more common in newer grills. Heat shields are lighter, easier to replace and harbor less bacteria than rocks.

Like lava rock or ceramic briquettes, heat shields also vaporize the meat drippings and 'infuse' the meat with more flavor.


Valves can wear out or become rusted and too difficult to operate, thus requiring replacement. A valve is unlike a burner in that a replacement usually must match exactly to the original in order to fit properly. Therefore, many grills are disposed of when valves fail, due to a lack of available replacements.

If a valve seems to be moving properly, but no gas is getting to the burner, the most common cause for this is debris in the venturi. This impediment can be cleared by using a long flexible object.

Indoor grills

While live-fire cooking is difficult indoors without heavy-duty ventilation, it is possible to simulate some of the effects of a live-fire grill with indoor equipment. The simplest design is known as a grill pan, which is a type of heavy frying pan with raised grill lines to hold the food off the floor of the pan and allow drippings to run off. Otherwise, a simple frying pan would do a reasonable job of grilling.

See also


External links

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