For immediately's recipe, I needed to use a variety as I just like the look of the totally different shapes and coloration and plus there are such a plethora of tastes which I think will work nicely on this Mushroom Frittata with Truffle Cheese. It was the standard dish of woodcutters and farmers, who took it with them when they went to work within the fields. Black truffle oil and white truffle oil are very strong but will work in a pinch. If actual black truffles aren't listed, it isn't natural truffle oil. Black Italian truffle (Tuber melanosporum) found within the northern Italian forests is the favourite of chef's mushrooms. Since they're found in the wild, their worth reaches $70 per pound. Toss every little thing along with tongs so the mushrooms are nicely coated with the new olive oil. Heat the oil … Stir the flour into the liquid until clean and put again on the heat. Stir constantly until you will have a thick liquor coating the mushrooms.