Wash and place potatoes in a large pot, add enough cold water to cover, and bring to a boil. Add 2 teaspoons salt, reduce heat, and simmer until just tender, 15 to 18 minutes.
Drain potatoes. After the potatoes have cooled off, you may remove any potato skins that are beginning to peel. Place the potatoes back into the pot.
Meanwhile, mix half-and-half, olive oil, garlic, and sage in a small saucepan and bring to a boil. Reduce heat and simmer 3 minutes; remove from heat.
Strain half-and-half mixture into the pot with potatoes. Add ¾ teaspoon salt, ¾ teaspoon pepper, ½ teaspoon nutmeg, and mash the potatoes to desired consistency. You can also sprinkle with nutmeg before serving if desired. Enjoy!
