1. First separate the yolk and white of the egg. The egg white bowl needs to be oil-free and water-free. Mix the egg yolk and caster sugar and beat with a whisk.
2. The egg yolk is beaten until the volume is enlarged, the state is thick, and the color becomes lighter. Add corn oil (or odorless vegetable oil such as sunflower oil) in three times. Each time you add it, use a whisk until the mixture is evenly mixed, then add it again, stir it until it is thick, then add water and stir it evenly.
3. Sift the low-powder, matcha powder, and baking powder into the egg yolk paste.
4. Stir evenly with a rubber spatula to form an egg yolk batter. Put the mixed egg yolk batter aside and set aside.
5. Add sugar to the egg whites three times to beat the egg whites to a wet and foamy state (after lifting the whisk, the egg whites pull out the curved sharp corners)
6. Put 1/3 of the egg whites into a bowl of egg yolks, and stir evenly (from the bottom up, do not stir in circles).
7. Put another 1/3 of the egg whites into the egg yolk bowl and continue to mix evenly.
8. Add honey bean red and stir well.
9. Pour the batter into a baking pan lined with tin foil or greased paper, smooth it, and vigorously shake it a few times to let the large bubbles inside the batter escape. Put the baking pan into the preheated 180 degree oven and bake for 15-20 minutes until the surface is golden brown.
10. Prepare a new piece of tin foil or grease paper, pour the cake on top, and remove the tin foil or grease paper from the cake while it is hot. The bottom of the cake is now facing up.
11. After the cake has cooled slightly, turn the cake over so that the surface faces up again. Apply a layer of jam or leave it alone.
12. On the side that is going to be rolled up, first cut with a knife at the position shown in the picture, but do not cut it. It is more convenient to roll it up for a while.
13. Using the inner rolling method, roll the egg roll all the way to the end, then wrap the egg roll with tin foil or greased paper and put it in the refrigerator for half an hour to shape, and then you can slice it for consumption.
