There is no difference between islet fruit and Jerusalem artichoke. The same kind of food has different names.

1. Name and origin: Jerusalem artichoke, also known as Jerusalem artichoke or Jerusalem artichoke, is native to the Americas and has spread to all parts of the world, including China, because of its strong adaptability. Jerusalem artichoke is named after its tubers are similar to ginger but not from the Zingiberaceae family.

2. Morphological characteristics: Islet fruit reproduces through tubers and has a large yield. The tubers are irregular in shape, with uneven marks and bud holes on the surface.

3. Uses: The islet fruit has a bitter taste and is often used as a cooking ingredient, especially in Asian cuisine. Tubers are also used for propagation. Jerusalem artichoke has many uses in cooking due to its special aroma and spicy taste.