1. Place the potatoes in a large pot on the stove and add water to cover. Bring to a boil. Reduce heat; cook, uncovered for 15-20 minutes or until tender.
2. Drain and return to potatoes to your pan. Mash potatoes with the Zyliss Stainless Steel Potato Masher, gradually adding butter, mayonnaise, garlic, rosemary, salt, pepper and enough milk to reach desired consistency. Lastly stir in your favorite cheese!