Truffle oil provides the same complex flavor as the mushrooms themselves, at a fraction of the price.
1. Bring potatoes, garlic, and enough water to cover all by 1 inch to a boil in medium saucepan. Reduce heat to medium, and simmer 20 minutes, or until potatoes are soft when pricked with fork. Drain, and reserve 1 cup cooking liquid.
2. Return potatoes and garlic to saucepan; mash with reserved cooking water until smooth. Stir in truffle oil and parsley, and season with salt and pepper, if desired.
Recipe from the November 2011 issue of Vegetarian Times.