Red-skinned small gourd Jerusalem artichoke, white-skinned small gourd Jerusalem artichoke, and green-skinned small gourd Jerusalem artichoke.

1. Red-skinned small gourd Jerusalem artichoke: The skin is red, the meat is tender, and the taste is crispy.

2. White-skinned small gourd Jerusalem artichoke: The skin is white, the meat is refreshing, and the taste is relatively delicious.

3. Green-skinned small gourd Jerusalem artichoke: The skin is green, the flesh is slightly hard, and the taste is slightly bitter.