Ingredients for chestnut cream: 250g cream, 50g milk, 75g cooked chestnuts, 50g condensed milk, 15g white sugar.
Separate egg whites and egg yolks: Separate the egg whites and egg yolks, and put the egg whites in the refrigerator to keep them cold.
Emulsification: Add 50g corn oil and 75g milk to the egg yolk and stir to fully emulsify the liquid.
Make the batter: Add 10g Hojicha powder and mix well. You can heat the batter to 35 degrees Celsius to help the Hojicha powder to dissolve. Add 60g low-gluten flour and mix well. Add 2g baking powder and 1g salt and mix well.
Whipping egg whites: Add 2g lemon juice and 60g sugar to the egg whites and whip until fluffy and smooth. You can now preheat the oven to 150 degrees Celsius.
Mix the batter and egg whites: Mix the batter and egg whites evenly and pour into a 28cm×28cm mold.
Baking: Place the mold in the middle layer of the preheated oven, bake at 150 degrees Celsius for 30 minutes, take it out, and let cool.
Making chestnut puree: Mix 50g of milk, 75g of cooked chestnuts, and 50g of condensed milk in a blender to obtain chestnut puree.
Whipped cream: Mix 250g cream, 15g sugar, and chestnut paste, and whip until fluffy and smooth.
Assemble: After spreading the cream on the cake, roll up the cake and place it in the refrigerator to chill.