1. Boil the elm bark noodles in a pot under cold water for 1 minute, turn off the heat, cover and simmer for 3 minutes, soak in cold water for half a minute, drain the water and remove.
2. Cool boiled water, add white vinegar, sugar, a little salt, shredded radish and chopped green onion to make a juice and put in the refrigerator for 2 hours.
3. Half an hour before eating, take out the sweet and sour cold noodle sauce in advance and slowly soak the sauce in the noodles.
4. Sweet and sour, a must-have food in summer.
Tips:White vinegar and sugar can be increased or decreased according to personal taste.
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