1. Sesame paste: Put sesame paste into a bowl, add proper amount of refined salt and cold water, and stir with chopsticks. When it is completely boiled, add a small amount of cold boiled water, stir until it is completely boiled, then add water and stir, and repeat this for many times until the sesame paste is mixed into a thin paste.

2. Garlic paste: Mash garlic cloves, chop them into paste with the back of a knife or mash garlic into a bowl, and add appropriate amount of cold water.

3. Mustard juice: Put mustard noodles in a bowl, pour a little boiling water, stir them into hard balls with chopsticks, and stir them repeatedly to taste. Or cover it and put it in a warm place or near the stove. After about 20 minutes, the spicy taste emerges, and appropriate amount of cold water is added to make juice.

4. Oil Chili: Dry Chili is crushed and put into a bowl. Put a ladle on the fire, add cooking oil and pepper, take out pepper when the oil is hot, and pour pepper after the oil is boiled.

5. Cold noodles: After the noodles are cooked, take them out and put them in a clean bamboo sieve, shower them with cold boiled water, drain the water, pour in a little sesame oil, and mix the noodles to make cold noodles. A small amount of home-made noodles can be directly fished out and put into cold water, cooled, fished out and drained.

6. When eating noodles, pick the cold noodles into a bowl with chopsticks, put a little shredded cucumber, and then add sesame sauce, mustard juice, garlic juice, vinegar and Chili oil in turn and mix well.