How to make hot pot base?

First, the small onion cut into sections, ginger slices, prepare the right amount of dry chili, a few star anise; start a pot of oil, the oil temperature will become hot, will be onion segments ginger slices of dry chili star anise under the pot, stir frying out of the aroma, add a full of water; large fire boil after the hot pot base on the good.