Yes, you can absolutely leave the skin on Yukon Gold Potatoes. The idea of leaving the skin on potatoes for mashed potatoes may seem odd, but with Yukon Gold Potatoes, it’s not just possible, it's delicious! Their skin adds an extra layer of flavor and texture, a boost of nutrition and results in a rustic mash that's welcome at the table all year round. But for holiday meals, when you want the smoothest mashed potatoes, I recommend peeling the potatoes first and using a potato ricer instead of a potato masher. (Never use a blender, hand blender or food processor to mash potatoes which will give them an unpleasant gluey texture.)