Ingredients: diced garlic (very small), diced ginger (very small), chopped dried Chili (very small-you can buy it directly), oil (lard is the most authentic), and edible salt.

Practice: put the chopped red pepper into a clean and waterless bowl, add garlic, ginger and edible salt (appropriate amount), then boil the oil, then slowly pour it into the bowl with chopped red pepper and stir it quickly with chopsticks, otherwise it will turn black. Mixing to obtain the final product.

The Chili oil in the noodle restaurant is similar.