A Ground beef should be used within two days of purchase. Be sure to check the use by information on the package label before purchase. You can store ground beef safely in your refrigerator at 35 to 40 degrees, for one to two days. If you can't use it within that time, freeze it.
Quick loaf pans. Most quick loaf recipes (banana bread, zucchini bread) are written for 9 x 5 x 2 3/4-inch pans, a traditionally shaped loaf pan that's just slightly larger than a yeast bread loaf pan. Caveat emptor: Using a yeast loaf pan for a quick bread recipe may result in batter overflowing the pan. Likewise, using a quick bread pan for a yeast loaf recipe may result in a loaf that doesn't dome. These pans, though similar in size and shape, are not interchangeable. Quick loaves also can be baked in a longer, narrower pan (about 12 x 4 x 2 1/2 inches).
Professional sheet pans used in commercial kitchens typically are made of aluminum, with a 1 in (2.5 cm) raised lip around the edge, and in the United States come in standard sizes. The full-size sheet pan is 26 by 18 in (66 by 46 cm), which is too large for most home ovens. A two thirds sheet pan (also referred to as a three quarter size sheet pan) is 21 by 15 in (53 by 38 cm). A half sheet pan is 18 by 13 in (46 by 33 cm); quarter sheets are 9 by 13 in (23 by 33 cm). The half sheet is approximately the same size as mass-market baking sheets found in supermarkets, and the quarter sheet is a common size for rectangular, single-layer cakes.