1. Raw materials: 4000g lettuce, 6000g 15 salt solution, 12000g salt water, 800g white sugar, 200g rock sugar, 10g white wine, 10g fermented glutinous rice juice, 1 spice bag.

2. Slice the lettuce, wash and drain, and soak in 15% salt solution for 1 hour.

3. Put the finely ground rock sugar and white sugar into the old salt water, and use clean chopsticks to stir and dissolve as much as possible.

4. Put the lettuce slices and other ingredients into the old salt water with white sugar and rock sugar, cover with a bamboo fence, add the spice bag, and soak for 1 and a half hours.