Here’s the short version: 2/3 cup is exactly 10 tablespoons plus 2 teaspoons. That’s about 5.33 fluid ounces for the metric-curious. If you don’t have a 2/3 measuring cup (and let’s face it, who does?), this is your golden ticket.
Think of it this way: one full cup holds 16 tablespoons. So 2/3 of that is 10.6 tablespoons. But since you can’t measure 0.6 of a spoon, you round down to 10 tablespoons and add 2 teaspoons. Boom. Crisis averted.
Why This Fraction Haunts Our Pantries
It’s not just you. The measurement “2/3 cup” has a reputation for being impossible to find. Most measuring cup sets come with 1/4, 1/3, 1/2, and 1 cup. They leave a glaring hole where 2/3 should be. It’s like a ghost in the measuring-cup graveyard. This is a design failure that turns casual bakers into desperate improvisers.
But why do recipes even use it? Because 2/3 is the sweet spot for oil, milk, or sugar in recipes that need richness without being heavy. It’s the Goldilocks of fractions.
