INGREDIENTS
2
peeled cut into pieces 4 pounds yukon gold potatoes
6
Garlic cloves, large
4
Thyme, sprigs
3/4 tsp
Black pepper, freshly ground
1 2/3 tbsp
Kosher salt
7/8 cup
Butter, unsalted
1/2 cup
Sour cream
1 1/4 cups
Whole milk
A potato ricer or food mill