1. Collect the juice over high heat: it can evaporate faster. At the same time, you must stir-fry constantly to avoid burning the pot.

2. Reduce the juice over low heat: Use when the soup is low, and stir-fry from time to time to prevent it from sticking to the pan.

3. Heating to collect juice: With continuous heating, the water will evaporate into gas due to high temperature ecology, making the soup dry.

4. Add sugar to collect the juice: Add "sugar" to increase the absorbance of the solution and make the juice thicker as it cooks to collect the juice.

5. Thicken the juice and collect the juice: Dissolve the starch in the water and wait for it to gelatinize to increase the thickness of the juice and collect the juice.

6. Automatic juice collection: only suitable for foods containing collagen. During the heating process, the viscous cholesterol will gradually be released and fully dissolved into the juice to produce ecological gravy. , automatically collect juice.