What is sour?

Sour is a taste that feels like a little bit of lemon or lime in your mouth.

Imagine you're eating an orange, it's juicy and tangy, and that’s what sour feels like. Now think about when you’ve been playing outside on a hot day and then you take a big sip of cold lemonade. That zing on your tongue? That’s sour doing its thing.

What makes something sour?

Some foods, like lemons, oranges, or even some kinds of candy, have something called acid, which is what gives them that sharp, zingy taste. Acid is like a tiny cheerleader in your mouth, it jumps around and says, “Hey, this is sour!”

When you eat something sour, it makes your tongue feel a little tingly or even a little bit prickly, kind of like how your skin feels when you step out of the shower on a cold morning.

So next time you taste something that makes you go "Ooh!" or "Ah!", remember, it's probably sour helping you discover a new flavor adventure!

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Examples

  1. A lemon is sour because it has citric acid, which makes your tongue feel fizzy.
  2. Sour candy tastes sharp and tangy because of the acids in it.
  3. When you drink soda, the carbonic acid gives it that zesty kick.

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Categories: Science · taste· sour· science of flavor