これさえ読めば安心! How to Tell the Difference Between Decaf and Regular Coffeeの活用法を順番に解説します。

You bought “decaf” but you’re bouncing off the walls? Welcome to the 3% rule. In the US, decaf can still have up to 3% of its original caffeine. That’s enough to turn you into a shaky rabbit if you’re sensitive.

Decaf vs Regular Coffee: What is the Difference? – Colipse

Regular coffee can also be labeled “naturally decaf” sometimes—but that’s rare. Unless you see “100% Decaffeinated” or “Caffeine Free,” assume it’s regular. But let’s be honest: you usually buy what you think you bought.

The Barista’s Dirty Trick

Ask the barista. They might sigh, roll their eyes, and grumble, “The decaf is in the green handle.” But if you’re not watching them pour? They might mix it up. Coffee shops have huge turnover, and newbies confuse the baskets all the time.

So ask nicely: “Could you please double-check?” Then stare at the beans. If they’re shiny and oily, that’s a dark roast—could be either. If they’re light and matte? Probably decaf. Probably.