Mustard (condiment) glucosinolates in mustard plant varieties, and the different isothiocyanates that are produced, make different flavors and intensities. Prepared mustard condiment may also have ingredients giving salty, sour (vinegar), and sweet flavors. Turmeric is often added to commercially prepared mustards, mainly to give them a yellow color. Prepared mustard is sold in glass jars, plastic bottles, or metal squeeze tubes. Because of its antibacterial properties, mustard does not require refrigeration for safety; it will not grow mold, mildew, or harmful bacteria. Mustard can last indefinitely without becoming inedible or harmful, though it may dry out, lose flavor, or brown from oxidation.
Cooking apple Cooking apple A cooking apple is an apple that is used primarily for cooking, as opposed to a dessert apple, which is eaten raw. Cooking apples are generally larger, and can be tarter than dessert varieties. Some varieties have a firm flesh that does not break down much when cooked. Cooking apples are also known as culinary apples. Culinary varieties with a high acid content become a froth when cooked, which is desirable for some recipes. In Britain a large range of apples are grown specifically for cooking. Worldwide, dual-purpose varieties (those used for both cooking and eating raw) are