Keep butter fresher for longer with this traditional stoneware butter keeper that uses water to create an air-tight seal. Press up to 1 cup (8 oz.) of softened butter into the well, one piece at a time, taking care to eliminate air bubbles. Fill the base with 1/2" of water, then add the well. The water should rise over the mouth of the bell when submerged to create an air-tight seal. Crafted with an earthy reactive glaze that results in subtle variations in tone, it looks beautiful on any kitchen counter. Capacity: 1 cup/8oz. Stoneware. Microwave- and dishwasher-safe. OUI is a new brand of thoughtfully designed living solutions that make room for your best, most joyful life. OUI creates unique products that brim with purpose and positivity. Make room for your story with OUI. Exclusive to Indigo.