Ingredients
2 lb. russet potatoes
2 lb. parsnips
2 clove garlic
1 tbsp. salt
1 c. buttermilk
3 tbsp. butter
4 large scallions
Freshly ground pepper
Preparation
Step 1Put potatoes, parsnips, garlic, and salt into a large pot. Add enough water to cover by 2 inches; bring to a boil. Reduce heat to medium-low and simmer uncovered until vegetables are tender when pierced with a fork, 15 to 20 minutes.Step 2Drain well, then press mixture through a potato ricer or food mill and return to pot; discard any remaining solids. (Alternately, mash well with a potato masher.)Step 3Return pot to stove over low heat. Add buttermilk and butter; cook, stirring often, until butter is melted and mixture is well combined, 2 to 3 minutes. Fold in scallions, then add salt and pepper to taste and cook until hot throughout, 1 to 2 minutes more. Transfer to a large bowl and serve.
