Perigord truffle. melanosporum truffle Perigord truffle Tuber melanosporum black truffles black truffle Tuber melanosporum English Black Truffle English Tuber melanosporum Perigord truffle. black Périgord truffles Truffles English English Tuber melanosporum precious black Perigord truffle. Périgord winter truffles Tuber melanosporum English black truffle