This is not necessarily true, and many conditions must be met to grow. Truffles, like mushrooms, are actually a kind of fungi. Their growth process is completely completed underground, and they cannot survive independently without photosynthesis. Therefore, they need to grow by living with roots and absorbing organic matter.

In Europe, * * * trees are mainly oak trees, others are hazel, linden, beech, birch, pine and poplar, and truffles can also be found in their roots. In addition to trees, truffles have relatively strict requirements on climate and soil, and its three main producing areas, Italy, France and Spain, are located in the northern Mediterranean, belonging to a typical Mediterranean climate.

Calcareous soil with hot and dry summer, mild and rainy winter and weak alkaline soil. The climate in Yunnan is very similar to this, so truffles can grow. The shape of truffles is determined by the land where they grow, and they will grow rounder in soft soil. If they grow in hard, stony soil with many roots, the surface will be lumpy.

Truffles are very picky about the growth environment, and truffle growth must meet three conditions:

Host tree, suitable soil and climatic conditions. Truffles can't grow when sunlight, moisture and soil pH change slightly. Therefore, things are rare and expensive, and naturally they are expensive. So far, no artificial cultivation method has been found, only through the gift of nature, so the output is unstable and the price is naturally expensive.

You can pick mushrooms if you want, but you have to "hunt" if you want truffles. Every truffle is rummaged through hounds or sows, which is very time-consuming and laborious. Delicious food that is not easy to get will make people cherish it more, so the price will naturally be expensive.