My brother in law made the best mashed potatoes on Thanksgiving, so I asked him to share the recipe, here it is...
3 lbs russet potatoes
1 yellow onion
1 bulb garlic
salt and pepper
1 cup butter
1 cup milk or cream
Quarter potatoes and place in boiling water. Boil until potatoes come apart like buttah when poked by fork, about 40 min.
Meanwhile, roast garlic bulb and caramelize onions. Slice off top 1/8 inch of garlic bulb. Drizzle bulb in olive oil and season with salt and pepper. Roast bulb at 400 degrees for 30 min or until you cum. To caramelize onions, I don't know, just fucking sautee them with a little salt for a long fucking time until they start to caramelize.
Combine all that shit (just onions and garlic, not potatoes idiot) in a food processor and pulse til it's a thick goopy mess.
Put all that shit (yes, potatoes, garlic/onion paste, butter and milk) in a bowl and mash it with a fork or potato masher until it reaches your desired consistency. Season to taste with salt and pepper."