Yukon Gold Mashed Potatoes

"These Yukon Gold mashed potatoes are so creamy and flavorful with roasted garlic, butter, sour cream, and milk. With just a handful of ingredients, they are so easy to make. You can roast the garlic in advance and store it in an airtight container in the refrigerator. Reheat it in the microwave at 50% power for 20-30 seconds, then squeeze the heads into the pot of drained potatoes. It is best to measure with this recipe rather than wing it. If you add too much liquid, the potatoes will not be as thick and creamy; if you add too little, the potatoes will be dry. "