This Red Pesto is a well-guarded and most delicious secret. The recipe combines the classic ingredients of Pesto Basil and Grana Padano cheese with a lovely red tomato sauce. The delicious twist to it by including heady black truffles. This sauce will go well with a spaghetti or heavy macaroni or with fast appetizers, heat up in a sauce pan over low heat, spread on toasted bread and serve. Try it over pasta: warm up and toss with pasta. The flavor is fresh, with that unmistakably earthy and heady chocolate note that only truffles can give.