This butter bowl is a ceramic dish with a simple, ingenious design that keeps butter at the perfect consistency for spreading while also preventing it from turning rancid.The bowl-shaped insert holds about a stick of butter and stores it into the crock creating an air-free seal when filled with a bit of water, keeping the butter at room temperature.Other than changing the water every few days, it requires a little more maintenance than a regular butter dish and the round footprint saves some counter space.• Dishwasher, oven and microwave safe• Designed In Canada – Made in China