Before starting this Velouté of Cep Mushrooms with Truffle Espuma recipe, make sure you have organised all the necessary ingredients.
Melt the butter in a saucepan. Slice the shallots with the 'Alligator' onion cutter (for a quicker and easier operation)... ... and add to the saucepan. Add the cep mushrooms, washed and diced beforehand. ...