distinctive spices that give eggnog its characteristic taste, including cinnamon, nutmeg, and vanilla, are used to create eggnog-flavored foods and beverages. Eggnog-flavored foods include eggnog ice cream, pie, cupcakes, rum cake, cookies, biscotti, pancake syrup, bread pudding, French toast and waffles. Eggnog-flavored beverages include eggnog lattes (developed by Starbucks in the mid-1980s), eggnog-flavored coffee and tea, some craft beers (e.g., eggnog stout) and eggnog milkshakes. Health and safety Raw eggs Most homemade eggnog recipes have historically included raw eggs. While the alcohol added to many homemade eggnogs is a bactericide, eggnog freshly made from raw eggs that are infected with salmonella and not heated can cause food poisoning. A very small percentage of raw eggs are infected with salmonella. In 1981 most of the residents and staff of a nursing home in the U.S. became ill with salmonellosis, and four died. The cause was almost certainly an eggnog made on the spur of the moment, with some cases caused in a secondary outbreak caused by food being handled later by people with contaminated hands. A later publication of the U.S. Food and Drug Administration (FDA) stated that the alcohol in eggnog is not sufficient to sterilize contaminated eggs. Using commercial pasteurized eggs or heating the milk-egg mixture sufficiently can make the drink safe; one recipe calls for heating the mixture gently, without boiling, until it thickens enough to "coat the back of a spoon." However, aged alcoholic eggnog becomes sterilized even if made with contaminated eggs. Aging alcoholic eggnog—sometimes for as long as a year—has been said to improve its flavor significantly, and also destroys pathogens. The Rockefeller University Laboratory of Bacterial Pathogenesis and Immunology carried out an experiment in 2010 where salmonella was added to a strong eggnog which was refrigerated and stored; the beverage still had dangerous levels of salmonella a week later, but it was all gone within three weeks. A concentration of at least 20% of alcohol (about the same amounts of alcoholic spirits and milk or cream), and refrigeration are recommended for safety. For concerns about the safety of selling products made from raw eggs and milk, the U.S. FDA has changed or altered the definition of eggnog a number of times towards artificial replacements for the large number of eggs traditionally used. FDA regulations () require eggnog to contain at least 1% egg yolk solids and at least 8.25% milk solids. Some recipes for