2. To make dried lettuce, choose fresh lettuce. Dried lettuce will taste more crisp and tender. Wash the leaves and roots of lettuce, remove the skin and hard ribs of lettuce, so that it tastes better.

3. After peeling all the skins, cut the lettuce into pieces with uniform thickness, which can be a little thicker and taste better. Add the right amount of water and a little salt and oil to the pot.

4. After the water is boiled, blanch the lettuce. Turn over when drowning 1 min. Don't wait for the water to boil, take out the lettuce, soak it in cold water and drain it.

5. Spread the lettuce evenly on the mat or in the leaking basket and dry it. It will take two days if the weather is fine, and it will be slower in winter. Remember to put it away at night and dry it the next day. After the lettuce is dried, put it in a fresh-keeping bag and seal it. When eating, just soak it in water.