No measuring cup? No problem. A cupped hand holds about 1/4 cup for most people (unless you have giant hands, in which case, congratulations on your basketball career). For 1/2 cup, use two handfuls. For 3/4 cup, use three—then take away one handful. That’s 3/4 minus 1/2. Again, 1/4 cup. Your hands are now a fraction calculator made of flesh and bone.
But please wash them first. Nobody wants thumb-flavored batter.
What Is Half Of 2/3 Cup Liquid at George Vaughan blog
One Final Warning
Beware the tablespoon trap. Some rogue recipes measure in tablespoons, and 1/4 cup equals 4 tablespoons. So if you’re subtracting 1/2 cup (8 tablespoons) from 3/4 cup (12 tablespoons), you get 4 tablespoons. Same answer, different units. It’s like converting feet to inches—except you’re hungry and run out of measuring spoons.
Pro tip: memorize that 1/4 cup = 4 tablespoons. It’s one of the great equations of life, right up there with “one beer equals one good idea.”