Chestnuts

Chestnuts are mainly a carbohydrate food and in some areas, they are called "bread trees".

An excerpt from the article 17 facts about chestnuts

In terms of nutrients, they cannot be compared to other nuts. Raw chestnuts consist of 60% water and contain 44 g of carbohydrates, 2 g of protein, and 1 g of fat, providing 200 kcal per 100 g. The carbohydrate content in chestnuts is comparable to the content in wheat and rice.

They contain twice as much starch as potatoes. They contain about 8% of various sugars, mainly sucrose, glucose, fructose, and, in smaller amounts, stachyose and raffinose, which are fermented in the large intestine and produce gases.