Prepare the Lotus Root
Peel the lotus roots with a vegetable peeler.
Slice them into thin, round pieces (about 3–4 mm thick).
In a large bowl, add 1 tablespoon of vinegar to 1 liter of cold water and soak the lotus root slices for 15–20 minutes.
After soaking, rinse them with clean water and let them drain in a colander.