Rinse and grate the Brussels sprouts fine and place them in a large serving bowl.
Mix in the freshly grated cheese and the juice of 1 or 2 lemons. (You want it cheesy and lemony!)
Mix in about 1/4 cup of truffle oil. After adding a little salt and pepper, taste and add more of anything it needs. I drizzle on one last glug of oil just before serving.