In Greek mythology, the gods consumed ambrosia and nectar, which conferred immortality. Ambrosia is usually considered to be the food of the gods, and nectar is usually the drink of the gods, but there are counterexamples where ambrosia is the drink, or nectar is the food.
Ambrosia is also a salad made with whipped or sour cream, mandarin oranges, pineapple, shredded coconut, and other fruits. More generally, it can be anything that tastes or smells delicious.
In addition to being a literally divine drink, nectar is also a sweet liquid secreted by plants to attract pollinating animals, a drink made with fruit juice, or simply any delicious drink.