Boletus edulis; the Cep. One of the most prized edibles you can find. This one was a bit wrinkly and I thought it might possibly just be a bitter bolete instead. The main thing is that it was one on its own so it felt really mean to pick it and stop its whole reproduction process right there just to get a definite id. On looking, it’s certainly a Cep, and I’m sure it would have tasted great. Not worth picking one fungus for that though – there should be several/many specimens before you feel free to harvest .