Cream

Cream is the fatty part of milk, skimmed off and kept on its own. That fat is what makes it behave differently in your pan: it coats your tongue, and it thickens sauces without flour. Richer creams whip into peaks that hold their shape; lighter ones stay pourable no matter how long you beat them. Heat it gently and it stays smooth; boil it too hard, especially with something acidic in the pot, and it can turn grainy on you.

Choose cream by look first: it should be smooth and evenly white, no lumps, no watery separation at the edges. Smell it — fresh cream smells clean and faintly sweet, never sour or sharp. Taste a spoonful too: it should be mild and gently sweet, with no sour edge anywhere on it.

Some people say thicker cream always means better quality. No! Thickness mostly tells you about fat content. For freshness and taste, trust your nose and your tongue, not the spoon. A heavy cream can still be dull, and a lighter one can be excellent in soup.

That belief leads to one common mistake: cooks dump in the heaviest cream they can find for every dish, overwhelming delicate flavors in soups where a lighter cream would have let the vegetables speak. Match the cream to the dish, not the other way around.