1. Cut the sweet orange into thin slices,
2. Boil them soft with water,
3. Use kitchen paper to absorb the moisture on the surface of the sweet orange slices and place them on the baking tray.
4. The egg white is separated from the yolk,
5. Add milk and salad oil to the egg yolk and mix well,
6. Then add low-gluten flour, mix well, set aside for later use,
7. Put the white sugar into the egg whites,
8. Just send it until soft foaming, (lifted at a curved angle,)
9. Scoop 1/3 of the egg whites into the egg yolk liquid, stir evenly,
10. Pour into the remaining egg whites, quickly stir evenly,
11. Pour it into the baking tray and put it in a preheated 180 degree oven for about 13 minutes.
12. Bake until the surface is golden,
13. Spread the whipped cream evenly on the cake slice and roll it up.
14. The delicious orange cake roll was born,
