1. Soften butter at room temperature, add powdered sugar and beat.

2. Add egg liquid little by little. If you find that the egg liquid cannot be absorbed by the butter, add some flour before continuing to add the egg liquid.

3. Add flour and milk powder and mix well.

4. Add milk and mix well. Let the egg roll batter rest for 15 minutes.

5. Add sesame seeds and germ before roasting to increase flavor and nutrition.