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Doneness is a gauge of how thoroughly cooked a cut of meat is based on its color, juiciness, and internal temperature. The gradations are most often used in reference to beef (especially steaks and roasts) but are also applicable to other types of meat.
Gradations, their descriptions, and their associated temperatures vary regionally, with different cuisines using different cooking procedures and terminology. For steaks, common gradations include rare, medium rare, medium, medium well, and well done. [1] [2]
The table below is from an American reference book [3] and pertains to beef and lamb.
Term (French) | Description [4] | Temperature range [3] | USDA recommended [5] | |
---|---|---|---|---|
Extra-rare or Blue (bleu) | very red | 46–49 °C | 115–125 °F | |
Rare (saignant) | red center; soft | 52–55 °C | 125–130 °F | |
Medium rare (à point) | warm red center; firmer | 55–60 °C | 130–140 °F | |
Medium (demi-anglais) | pink and firm | 60–65 °C | 140–150 °F | 145 °F and rest for at least 5 minutes |
Medium well (cuit) | small amount of pink in the center | 65–69 °C | 150–155 °F | |
Well done (bien cuit) | gray-brown throughout; firm | 71 °C+ | 160 °F+ | 160 °F for ground beef |
Overcooked/Burned | blackened throughout; hard | >71 °C | >160 °F |
The interior of a cut of meat will still increase in temperature by 3–5 °C (5–9 °F) after it is removed from an oven or other heat source as the hot exterior continues to warm the comparatively cooler interior. The exception is if the meat has been prepared in a sous-vide process or some other low-temperature cooking technique, as it will already be at temperature equilibrium. The temperatures indicated above are the peak temperatures in the cooking process, so the meat should be removed from the heat source when it is a few degrees cooler.
The meat should be allowed to "rest" for a suitable amount of time (depending on the size of the cut) before being served. This makes it easier to carve and makes its structure firmer and more resistant to deformation. Its water-holding capacity also increases and less liquid is lost from the meat during carving. [6] : 165
As meat is cooked, it turns from red to pink to gray to brown to black (if burnt), and the amount of myoglobin and other juices decreases. The color change is due to changes in the oxidation of the iron atom of the heme group in the myoglobin protein. Raw meat is red due to the myoglobin protein in the muscles, not hemoglobin from blood (which also contains a heme group, hence the color). Before cooking, the iron atom is in a +2 oxidation state and bound to a dioxygen molecule (O
2), giving raw meat its red color. As meat cooks, the iron atom loses an electron, moving to a +3 oxidation state and coordinating with a water molecule (H
2O), which causes the meat to turn brown.
Searing raises the meat's surface temperature to 150 °C (302 °F), yielding browning via the caramelization of sugars and the Maillard reaction of amino acids. If raised to a high enough temperature, meat blackens from burning.
Well done cuts, in addition to being brown, are drier than other cuts and contain few or no juices. Note that searing (cooking the exterior at a high temperature) in no way "seals in the juices", since water evaporates at the same or higher rates as it does in unseared meat. [7] However, searing does play an important role in browning, which is a crucial contributor to flavor and texture.
The United States Department of Agriculture has stated that rare steaks are unsafe to eat. [8] It recommends an internal temperature of at least 145 °F (63 °C) for cuts of beef, veal, and lamb in order to prevent foodborne illness, and warns that color and texture indicators are not reliable. [5] The same meats should be thoroughly cooked to 160 °F (71 °C) when ground or tenderized by cutting, since these processes distribute bacteria throughout the meat.
Usually, most bacteria do not enter the inside of uncooked meat and remain on the surface. However, proteolytic bacteria are able to dissolve or break down the connective tissue and fibers of the meat and enter the inside. Non-proteolytic bacteria such as Escherichia coli do not enter inside the meat. [9]
Beef is the culinary name for meat from cattle. Beef can be prepared in various ways; cuts are often used for steak, which can be cooked to varying degrees of doneness, while trimmings are often ground or minced, as found in most hamburgers. Beef contains protein, iron, and vitamin B12. Along with other kinds of red meat, high consumption is associated with an increased risk of colorectal cancer and coronary heart disease, especially when processed. Beef has a high environmental impact, being a primary driver of deforestation with the highest greenhouse gas emissions of any agricultural product.
Grilling is a form of cooking that involves heat applied to the surface of food, commonly from above, below or from the side. Grilling usually involves a significant amount of direct, radiant heat, and tends to be used for cooking meat and vegetables quickly. Food to be grilled is cooked on a grill, using a cast iron/frying pan, or a grill pan.
Roasting is a cooking method that uses dry heat where hot air covers the food, cooking it evenly on all sides with temperatures of at least 150 °C (300 °F) from an open flame, oven, or other heat source. Roasting can enhance the flavor through caramelization and Maillard browning on the surface of the food. Roasting uses indirect, diffused heat, and is suitable for slower cooking of meat in a larger, whole piece. Meats and most root and bulb vegetables can be roasted. Any piece of meat, especially red meat, that has been cooked in this fashion is called a roast. Meats and vegetables prepared in this way are described as "roasted", e.g., roasted chicken or roasted squash.
A beefsteak, often called just steak, is a flat cut of beef with parallel faces, usually cut perpendicular to the muscle fibers. In common restaurant service a single serving has a raw mass ranging from 120 to 600 grams. Beef steaks are usually grilled, pan-fried, or broiled. The more tender cuts from the loin and rib are cooked quickly, using dry heat, and served whole. Less tender cuts from the chuck or round are cooked with moist heat or are mechanically tenderized.
Myoglobin is an iron- and oxygen-binding protein found in the cardiac and skeletal muscle tissue of vertebrates in general and in almost all mammals. Myoglobin is distantly related to hemoglobin. Compared to hemoglobin, myoglobin has a higher affinity for oxygen and does not have cooperative binding with oxygen like hemoglobin does. Myoglobin consists of non-polar amino acids at the core of the globulin, where the heme group is non-covalently bounded with the surrounding polypeptide of myoglobin. In humans, myoglobin is found in the bloodstream only after muscle injury.
Searing or pan searing is a technique used in grilling, baking, braising, roasting, sautéing, and the like, in which the surface of the food is cooked at high temperature until a browned crust forms. Similar techniques, such as browning and blackening, are typically used to sear all sides of a particular piece of meat, fish, poultry, etc. before finishing it in the oven. To obtain the desired brown or black crust, the meat surface must exceed 150 °C (300 °F), so searing requires the meat surface be free of water, which boils at around 100 °C (212 °F).
Chateaubriand is a dish that traditionally consists of a large front cut fillet of tenderloin grilled between two lesser pieces of meat that are discarded after cooking. While the term originally referred to the preparation of the dish, Auguste Escoffier named the specific front cut of the tenderloin the Chateaubriand.
Sous vide, also known as low-temperature, long-time (LTLT) cooking, is a method of cooking invented by the French chef Georges Pralus in 1974, in which food is placed in a plastic pouch or a glass jar and cooked in a water bath for longer than usual cooking times at a precisely regulated temperature.
The tri-tip is a triangular cut of beef from the bottom sirloin subprimal cut, consisting of the tensor fasciae latae muscle. Untrimmed, the tri-tip weighs around 5 pounds. In the US, the tri-tip is taken from NAMP cut 185C.
A meat thermometer or cooking thermometer is a thermometer used to measure the internal temperature of meat, especially roasts and steaks, and other cooked foods. The degree of "doneness" of meat or bread correlates closely with the internal temperature, so that a thermometer reading indicates when it is cooked as desired. When cooking, food should always be cooked so that the interior reaches a temperature sufficient, that in the case of meat is enough to kill pathogens that may cause foodborne illness or, in the case of bread, that is done baking; the thermometer helps to ensure this.
Bistecca alla fiorentina is an Italian steak dish made of young steer (vitellone) or heifer (scottona) that is one of the most famous dishes in Tuscan cuisine. It is loin steak on the bone cooked on a grill until rare (50 °C).
Curing is any of various food preservation and flavoring processes of foods such as meat, fish and vegetables, by the addition of salt, with the aim of drawing moisture out of the food by the process of osmosis. Because curing increases the solute concentration in the food and hence decreases its water potential, the food becomes inhospitable for the microbe growth that causes food spoilage. Curing can be traced back to antiquity, and was the primary method of preserving meat and fish until the late 19th century. Dehydration was the earliest form of food curing. Many curing processes also involve smoking, spicing, cooking, or the addition of combinations of sugar, nitrate, and nitrite.
A Pittsburgh rare steak is one that has been heated to a very high temperature very quickly, so it is charred on the outside but still rare or raw on the inside. The degree of rareness and the amount of charring on the outside may vary according to taste. The term "Pittsburgh rare" is used in some parts of the American Midwest and Eastern Seaboard, but similar methods of sear cooking are known by different terms elsewhere, including Blue Steak, Chicago-style rare and, in Pittsburgh itself, black and blue.
Heterocyclic amines, also sometimes referred to as HCAs, are chemical compounds containing at least one heterocyclic ring, which by definition has atoms of at least two different elements, as well as at least one amine (nitrogen-containing) group. Typically it is a nitrogen atom of an amine group that also makes the ring heterocyclic, though compounds exist in which this is not the case. The biological functions of heterocyclic amines vary, including vitamins and carcinogens. Carcinogenic heterocyclic amines are created by high temperature cooking of meat and smoking of plant matter like tobacco. Some well known heterocyclic amines are niacin, nicotine, and the nucleobases that encode genetic information in DNA.
Low-temperature cooking is a cooking technique that uses temperatures in the range of about 60 to 90 °C for a prolonged time to cook food. Low-temperature cooking methods include sous vide cooking, slow cooking using a slow cooker, cooking in a normal oven which has a minimal setting of about 70 °C (158 °F), and using a combi steamer providing exact temperature control. The traditional cooking pit also cooks food at low temperature.
Basting is a cooking technique that involves cooking meat with either its own juices or some type of preparation such as a sauce or marinade, such as barbecue. The meat is left to cook, then periodically coated with the juice. Basting is a technique generally known to be used for turkey, pork, chicken, duck, and beef, but may be applied to any type of meat.
Warmed-over flavor is an unpleasant characteristic usually associated with meat which has been cooked and then refrigerated. The deterioration of meat flavor is most noticeable upon reheating. As cooking and subsequent refrigeration is the case with most convenience foods containing meat, it is a significant challenge to the processed food industry. The flavor is variously described as "rancid," "stale," and like "cardboard," and even compared to "damp dog hair." Warmed-over flavor is caused by the oxidative decomposition of lipids in the meat into chemicals which have an unpleasant taste or odor. This decomposition process begins after cooking or processing and is aided by the release of naturally occurring iron in the meat.
A steak is a thick cut of meat sliced across the muscle fibers, sometimes including a bone. It is normally grilled or fried. Steak can be diced, or cooked in sauce, as in steak and kidney pie.
A smoke ring is a region of pink colored meat in the outermost 8-10 millimeters of smoked meats. It is usually seen on smoked chicken, pork, and beef. There is some debate as to whether or not the presence of the smoke ring is actually an indicator of quality of the finished barbecue product but it is widely considered to be a desirable characteristic of barbecue.