1. Peel the lettuce skin first and then wash it.

2. Cut into small pieces of suitable size.

3. Use a straight straight knife to cut into thicker slices.

4. Place the cut lettuce flat on the plate with the cut facing up. Take one piece as an example and cut it into diamond-shaped pieces with a diagonal knife.

5. Lettuce, Lactuca genus in the Asteraceae family.

6. Native to the Mediterranean coast.

7. Lettuce seeds can form varieties with fleshy tender stems, which are one or two annual herbaceous plants.

8. The stem skin is white-green, the stem meat is crisp and tender, the young stems are emerald green, and turn white-green when mature.

9. The stems are in circles, like bamboo shoots.

10. Tap root system, most lateral roots will appear after transplantation, shallow and dense, mainly distributed in the 20-30cm soil layer.

11. Stem shortening.

12. The leaves are alternate, lanceolate or oblong, etc., the color is light green, green, dark green or purple, the leaf surface is flat or wrinkled, and the edge is whole or notched.

13. The shortened stem gradually elongates and thickens as the plant grows. After the stem end differentiates into flower buds, the stem grows thicker while the flower stem elongates, forming a rod-shaped fleshy tender stem.

14. Flesh color is light green, emerald green or yellow-green.

15. Conical flower heads, light yellow flowers, each inflorescence has about 20 flowers, self-pollination, sometimes cross-pollination occurs.

16. Achenes, dark brown or silvery white, with pappus.