Pancakes: whisk discard with an egg, a splash of milk, a spoon of sugar, and baking soda. Cook on a hot griddle.
Crackers: discard, flour, olive oil, salt, and herbs. Roll thin, cut, bake at 350°F until crisp.
Waffles: discard, egg, melted butter, sugar, baking soda. Rest overnight for the crispest waffle you've ever made.
Pizza dough: discard as part of the flour weight in any pizza dough recipe adds flavor without extra fermentation time.
Focaccia, banana bread, biscuits, cornbread, tortillas, English muffins, pretzels, and skillet flatbread all take discard cheerfully.