This cute 2 piece egg poacher works in your microwave. Spray bowl with oil /butter (optional). Crack egg into bowl and pierce yolk with a knife to release steam during cooking. Lid comes with vent hole. Just 30 seconds, and voila! A very light, frosty blue that goes over a bright red underglaze. As always, use care when handling hot objects. Glaze design may vary slightly from the one in the picture.