In a saucepan, melt butter with garlic. After butter melts, whisk in cream. Bring to a simmer and set aside, keeping warm.
Skin potatoes, or leave on for "rustic" style. Boil potatoes and drain.
While potatoes are still hot, mash them, whisking in a cup of butter-cream mixture at a time until it reaches your desired consistency.
Whisk in 1/4 cup grated parmesan cheese (optional) and salt and pepper to taste.Makes 6 Source: