The forms are, although very small, surprisingly robust, that is completed, even relatively liquid batter "breaks" not on the sides and the cupcakes remain dimensionally stable. After baking, jumping the small works of art with some pressure slightly from the ramekins, butter and / or grease can be dispensed with entirely. Even the cleaning effort is minimal - short abrubbeln in the water and the next round is nothing to prevent.
Conclusion: Practical eye-catcher with a high fun - and benefit factor.