This same logic applies to soups, sauces, or that one time you tried to make homemade ranch dressing. Measuring 3/4 cup of sour cream with a 1/3 cup is a slippery business. Literally, it will slide off the spoon.
My advice? Use the dry scoop method. Scoop, level it off with a butter knife, and then dump. For the third scoop, just eyeball the halfway point. Your taste buds won’t know the difference. The secret is that recipes are mostly forgiving.
Unless you’re baking. Baking is like a math teacher who doesn’t accept late homework. Get the fraction right, or your cake will taste like regret.
The Lazy Baker’s Guide
So, let’s summarize for the busy people who are reading this while their oven preheats. 3/4 cup equals 2.25 times of a 1/3 cup. That means two full scoops, and one half scoop. That’s it.
Does 3/4 Cup Equal 1 Cup at Elvira Pierce blog
If you’re lazy like me, you can also just use a 1/4 cup three times. But where’s the fun in that? The 1/3 cup is the underdog of measuring cups. It’s awkward, always forgotten at the back of the drawer.
But now you know its secret. You can master this fraction while making chocolate chip cookies that could win a county fair. Or at least while making a halfway decent bowl of oatmeal.