Hollow cabbage thickened with clear gravy, fried in oil and water stir-fry method, soaked in lemon juice, add wine stir-fry will not turn black.

With the oil and water frying method to reduce the dish and pot contact time, that is, add two spoons of oil and water in the pot, a sufficient amount of salt, monosodium glutamate (MSG), a tablespoon of salad oil, and so on when the water is open to the dish poured into the pot, quickly stirred evenly, after the break can be fished out of the oil on the plate, so that the stir-fried cabbages or lettuce color green, glossy, and does not turn black.

Prepare a pot of water, squeeze a small amount of lemon juice. Wash the cabbage, and before frying, soak the leaf part in the prepared lemon water. The reason why the hollow cabbage will be black is because it contains iron, so it is easy to blacken. After soaking in the lemon water, the acidity of the lemon will control the iron in the cabbages from turning black so quickly.

The clear gravy is thickened, and then the gravy is wrapped in bright oil, which isolates the cabbage from the oxygen in the air. This is similar to the oil-water stir-fry method, which allows the fat to evenly coat the ingredients first, and works on the same principle.

Leafy vegetables like cabbages, frying process can add wine, add wine can volatilize the water vapor in the cabbages, so that the cabbages will not be blackened.