How to choose cabbage and how to cut it?

Cabbage is easy to choose. Choose before the cabbage in the addition of baking soda soaked in water for 10 minutes, and then pour out the water, the rotten bad, wormholes especially many leaves yanked off, with a small tap water to clean the cabbage root inside the soil and dirt, you can pull down each leaf with the cabbage pole to clean. Cutting when the cabbage in order, a knife cut across, on the line.