First crayfish shrimp feet cut off, cut the shrimp head to remove the shrimp stomach, cut the head of the shrimp when the incision should be as small as possible, do not let the shrimp yolk out, because the shrimp yolk is very fresh flavor, and then pull out the shrimp line. Then put into the basin and then into the water, with a brush to brush away the dirt on the crayfish, rinse clean and spare. At this time and then the ginger minced, garlic flattened and chopped into garlic, green peppers de-tipped and deseeded cut chili pepper slices, pot pour 200 grams of canola oil to simmer onion oil, canola oil simmering onion oil flavor is stronger, the oil temperature of five into the heat in turn into the green peppercorns, star anise, garlic, cilantro, scallions, simmering to all the ingredients slightly charred, and then fished out of the auxiliaries, and then out of the excess onion oil, only to stay in the pot of 50 grams of onion oil and then