Although we give cooking times for beef, we debated doing so at first. There are so many factors involved: how cold your refrigerator is, how cold the meat is, how marbled the meat is, how accurate your oven is, how consistent the heat is, how often you open the door, what the composition of your roasting pan is, etc.

In the end, the only reliable test is done with an instant-read meat thermometer, inserted diagonally into the center of the meat for 5 seconds to get an accurate reading. What that temperature actually means is a matter of debate. For example, we prefer beef rarer than the USDA guidelines.
Theirs have been established for safety; ours, for safety and taste. Should you choose to follow our recommendations, realize what you’re doing, buy certified organic beef from a reputable butcher, and cook it within a day of purchase. Rare meat should not be consumed by anyone with immune deficiencies, expectant mothers, or the infirm.
Our definitions are rare, 120°F; medium-rare, 125°F; medium, 140°F; and well done, 160°F. The USDA’s are rare, not recommended; medium-rare, 145°F; medium, 160°F; and well done, 170°F.
However, you’ll notice that we don’t strictly adhere to these temperatures inside some recipes. We sometimes suggest you take the beef off the heat at a slightly lower temperature than those given.
Larger cuts of beef continue to cook off the heat, the fat still hot in the meat. Also note that there are no temperatures given for fattier, tougher cuts that are stewed, braised, or roasted-brisket, for example-because these are cooked to temperatures well beyond medium, even well done, until the meat falls apart.

Grading Beef
The USDA names eight categories of beef, “prime” to “canner.” Prime is fattier, more marbled, and thus more resistant to turning tough or taking on a liver like tang. Rarely seen in supermarkets, prime is usually reserved for restaurants and high-end butcher shops.
The three gradations routinely found in supermarkets are “choice,” “select,” and sometimes “standard.” In the end, we actually prefer choice, even over prime. It’s leaner, a little chewier, with a bolder flavor; it does, however, require greater accuracy in its internal roasted temperature to ensure tenderness. Select beef is best reserved for stewing.
Ground Beef
Most ground beef is marked by the percentage of fat in the beef once it’s been ground. By U.S. law, no ground beef can have more than 30% fat. (Such a product would thus be labeled “70% ground beef.”) Most ground beef is labeled 80%, 90%, and 93%.
Be forewarned that there is a vast difference between products labeled “ground beef ” and those labeled “hamburger.” Ground beef must not have any added fat, other than what is present in the meat that’s ground. Hamburger, by contrast, may have additional fat ground into the meat and may have a fat content far higher than 30%.
That said, there are some teeth in the ground-beef monikers. According to the USDA, 100 grams of “lean” ground beef must have less than 10 grams of fat, 4.5 grams of saturated fat, and 95 milligrams of cholesterol; 100 grams of “extra lean” must have less than 5 grams of fat, 2 grams of saturated fat, and 95 grams of cholesterol.

When purchasing ground beef, remember that the sell-by date on the package has no governmental authorization; you must trust your local market and butcher. Do not buy meat that has turned fully brown; do not use meat with a funky smell or shimmery sheen. Also remember that most beef is ground at local supermarkets, not at plants under USDA supervision.
If you’re not going to use ground beef within a day of purchase, remove it from its packaging, seal it in a ziplock bag, and freeze it for up to 2 months. Thaw ground beef in the refrigerator, never on the counter. A pound should take about 24 hours to thaw.






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fats have been shown to elevate serum cholesterol, and contribute to heart disease and cancer. Do not consume saturated fats! They slow the liver’s ability to remove arter-clogging LDL (low-density lipopreteins) from the blood. However, the nomounsaturated fats aid in removing LDl (bad fats) from the blood stream.