Porcini mushrooms cannot be cultivated without further ado, as they are mycorrhizal fungi that depend on certain tree roots as symbiosis partners. However, you can try to create the conditions for a settlement on your property.

Plant specific tree species and inoculate the soil
The different types of porcini mushrooms indicate from their name whether they grow near pine or oak trees. In this respect, you can only force their growth with a corresponding stock of trees on your property. With a bit of luck, after inoculating the root area of certain trees with porcini spores, the tasty mushrooms can settle.
tips and tricks
For typically non-commercially grown mushroom varieties like porcini, mycelium packs and spore kits are usually not easy to come by. Sometimes, however, inoculating the soil with the remains of porcini mushroom lamellae can also be successful if spores are still attached.