It is best to blanch lettuce leaves in water. Lettuce leaves need to be scalded, because lettuce leaves contain a certain astringency, so it will be better to eat them after scalding. Just blanch with salt water.

When we blanch, don't put lettuce leaves in boiling water for a long time, because the water-soluble vitamins in lettuce leaves will be lost during blanching, so we need to blanch quickly. Moreover, the color of lettuce leaves after blanching will be more vivid and very beautiful.