Truffle cultivation is a profitable agricultural business that can potentially generate 1-2 million forints per hectare, with the potential to earn 10-20 times the income of regular agricultural land. The activity requires a free plot of land, suitable soil conditions, and some self-sufficiency. It takes 8-10 years for the forest to start producing truffles, and there is support available through the Rural Development Program. The costs include afforestation, seedling prices, and forest maintenance, but support is also available for these costs. The yield increases over time, potentially providing annual revenues of HUF 1-1.5 million. However, it's important to note that the first truffles are not expected until the 8th year, and there are additional costs for mandatory training and a suitable dog.