Clarified butter is regular butter that has been melted and separated from its milk solids and water, resulting in a purer fat that has a higher smoke point and longer shelf life.
Regular butter contains about 80% fat, 16% water, and 4% milk solids, which can burn at lower temperatures and may spoil faster.
Pro tip: Use clarified butter for frying and sautéing to avoid burning, and enjoy regular butter for spreading and baking for its rich flavor.