The materials to be prepared in advance include: 55g of tomatoes, 1 lemon and 11g of rock sugar.

1. Weigh all the materials and squeeze the lemon juice for later use.

2. Cross the tomatoes on the surface and put them in the pot.

3. Pour in hot water.

4. After a while, peel off the skin on the surface.

5. Remove the seeds inside, cut into large pieces and put them into a cooking machine to break.

6. Pour into a stainless steel pot.

7. Add rock sugar and simmer.

8. Cook until thick.

9. Add lemon juice, cook it and take it out. That's it.