Why Did My Lemon Butter Sauce Separate?
Your lemon butter sauce most likely separated because the fat and acid in the sauce did not properly emulsify. This can happen if the sauce is overheated, if the liquids are not added slowly enough, or if the ingredients were not at the same temperature when they were combined. To avoid separation, try adding the liquids slowly and whisking constantly, and make sure all ingredients are at room temperature before combining them.