Unsalted butter is the industry standard for professional kitchens and baking because it offers total control over a dish's flavor and chemistry.

It is the best choice if you are monitoring your sodium intake.

Baking is a science where even small changes in salt can affect gluten formation, yeast activity, and final texture. Using unsalted butter allows you to add the exact amount of salt a recipe requires.

Salt acts as a preservative, meaning salted butter can stay on grocery shelves longer. Unsalted butter is often fresher and has a purer "sweet cream" taste.

Salt content in salted butter varies by brand, making it unpredictable for delicate recipes. Unsalted butter ensures your cookies and cakes taste the same every time.