When Should You Use Salted or Unsalted Butter?

Most of butter is milk fat; the rest is water and milk solids. Salted butter also contains added salt. The amount added varies from producer to producer and is not always detailed on the package. This uncertainty creates a direct problem in recipes where the amount of salt matters; the same recipe can turn out with different saltiness when made with different brands. That is why a recipe made with salted butter may need to be adjusted when the brand changes. When a recipe calls for unsalted butter, that detail is often intentional.

That is exactly why pastries and desserts call for unsalted butter. In recipes such as cookies, cakes, tart dough, and frosting, the amount of salt is small but important; when you use unsalted butter, you have full control over that amount. If you use salted butter, reduce the salt by some amount in the recipe and adjust to taste; however, tasting is not always possible with sweet doughs. The same care is needed with tart dough and puff pastry made with salted butter.

Salt has a second, less well-known effect: it masks signs of butter freshness. Butter goes rancid over time, and the change first becomes noticeable in the smell; salt masks that smell to some extent. That is why unsalted butter shows its freshness more clearly. For the same reason, salted butter lasts a little longer; salt acts as a preservative here. When buying unsalted butter, pay closer attention to its date and storage conditions. Do not leave butter out; light and air significantly accelerate rancidity.

Salted butter has its own clear uses. Use salted butter directly for spreading on bread, melting over boiled vegetables, or finishing pilaf or pasta; in those cases, salt is a desired flavor and the amount is not critical. It also works in sautéing and pan-frying. The decision comes down to one question: is the amount of salt critical in this recipe? Salted butter can also be used in sauces; just add the sauce’s salt at the very end.

Most butter sold in Türkiye is unsalted, but this is not true of every product; the package states whether it is salted, so read that line when buying it. In recipes from other countries, unsalted butter is often the default. If you only have salted butter, the recipe can still be made; adjust the salt by tasting, starting with a small amount. Keeping the 2 types on hand is also a solution: set one aside for cooking and the other for the table. You can choose a large package of butter for cooking and a small package for serving.