1. Salt water method:Prepare a pot of cold water, wash the eggplant and cut into pieces, put it into the cold water, then add a spoonful of salt, when you want to fry, take out the eggplant and pinch it dry.

2. Lemon juice method: When frying eggplant, drop a few drops of lemon juice into the eggplant to slow down the oxidation of the eggplant.

3. Vinegar method: add a few drops of vinegar when frying eggplant, fried eggplant will not turn black. It should be noted that do not add too much, otherwise it will affect the absorption of nutrients.

4. Animal oil frying: When frying eggplant, use lard or other animal oil to fry. Animal oil can quickly form a layer of insulation on the surface of the eggplant to prevent oxidation, so that the fried eggplant will not only not turn black, and more flavorful.