Salsa con Porcini e Tartufi Estivi

Cultivated mushrooms [Agarius bisporus] 48.5%, porcini mushrooms [Boletus edulis and rel. group] 16%, black summer truffle broth [water, summer truffle – Tuber aestivum vitt.], extra virgin olive oil, black summer truffle [tuber aestivum vitt.] 5%, onion, butter, salt, garlic, pepper, flavourings.