French or bell butter keepers by Cascadia Stoneware. Jeff and Natalie McDougall make this line of functional wares in Deming WA. Pack softened butter in the top or "bell" of the lid, add water to the jar, high enough to reach the packed butter. The water forms a seal that prevents butter from going rancid. Leave your butter out of the fridge on the counter and it reamins soft and spreadable. Serve from the lid. 3.5" tall, 4.5" wide. Choose Goldstone, Midnight Blue, Sea Foam or Black Galaxy.