How Much Cornstarch to Thicken 1 Cup of Liquidの全体像を分かりやすくまとめてご紹介します。

For most liquids, the sweet spot is 1 tablespoon of cornstarch per 1 cup of liquid. Think of it as the Goldilocks rule—not too little, not too much, just right for a silky, glossy thickness. If you want a thicker, almost gravy-like consistency, bump it up to 2 tablespoons. But why are we measuring at all? Because cornstarch is powerful stuff, and a little goes a long way.

Why is this ratio so cool? Well, cornstarch is pure starch, which acts like a tiny sponge. When heated, those starch granules swell and trap water, turning a thin liquid into a luscious gel. It’s like watching a liquid version of a sponge grow—science you can eat!

The Slurry Secret: Don’t Dump It In Dry

Here’s the trick that saves your dinner: always mix cornstarch with cold water first—that’s called a “slurry.” Use about 2 tablespoons of cold water for every tablespoon of cornstarch. If you dump dry cornstarch directly into hot liquid, it clumps into sad, gooey blobs that never dissolve. It’s like trying to mix sand into dry concrete—pointless and frustrating.

Whisk your slurry until it’s smooth like milk, then pour it into your hot liquid while stirring. Watch closely—it thickens almost instantly. Boom, dinner is saved. And if you’re thinking, “But what about cold liquids?” Good question—cornstarch needs heat to activate, so cold pudding is a no-go without cooking it first.