Place into a large pot and just cover with cold water. Add 1 teaspoon salt.
Bring to a boil over high heat, then reduce to medium and continue simmering until tender, about 8 minutes.
Meanwhile, combine half and half, butter, garlic cloves and dried parsley in a small skillet. Bring to a low simmer over medium heat (do not boil!) and let simmer until potatoes are cooked, stirring occasionally. If it appears separated, it is fine.
When potatoes are cooked, drain and add half and half to potatoes in pot. Mash until smooth (or desired smoothness). Taste and adjust seasonings to your preferences.