Heavy cream has a high fat content. Fat loves heat. It stays calm and creamy even when boiling.
Greek yogurt has lots of protein and water. When it hits high heat, the proteins freak out. They clump together. It’s like a party where everyone suddenly hugs too tightly.
To avoid this, temper the yogurt. Add a little hot liquid to it first. Warm it up slowly, like you’re coaxing a shy cat out from under the bed.
Fun Fix: The “Starch Shield” Trick
Here’s a secret weapon: cornstarch. Stir a teaspoon into your yogurt before adding it to hot stuff. The starch molecules act like bodyguards. They protect the yogurt from curdling chaos.
It’s like giving your yogurt a tiny umbrella in a heat storm. Works like a charm for soups and sauces.