This very French butter keeper went viral on TikTok - this is your chance to nab one.
Fill the cup with butter, and add a little salted water to the reservoir. Place the buttercup into the reservior, and the water creates a seal, keeping the butter perfectly spreadable, and preventing it from going rancid. 
 
Watch a full video about how I made this here. 
 
As this is a handmade item, some slight variations occur from piece to piece.
 
8 x 8 cm approximately.
 
Made with a speckled stoneware clay and food safe glazes.
Handwash is advised, microwaves and ovens are discouraged. Handmade with lots of love in London.