Old Home Kitchen Butter Keeper, Porcelain Butter Boat, White FOR SOFT, SPREADABLE BUTTER. No more hard, crumbling butter thats impossible to spread. THREE PIECE FRENCH BUTTER DISH. Fill the middle compartment with water to keep butter at perfect temperature. KEEPS BUTTER FRESH OUT OF THE FRIDGE. Water creates an airtight seal that prevents spoiling, even when not refrigerated. HOLDS 4 OUNCES OF BUTTER. Keeps an entire stick of butter fresh. PORCELAIN STONEWARE. Microwave and dishwasher safe.