Created by Fizzybrat on August 7, 2017
Step 1: Preheat oven to 350°F.
Step 2: Remove outermost papery leaves from garlic but do not break bulbs apart or remove thin paper sheath covering each clove.
Step 3: Rub garlic bulbs with olive oil and wrap together with thyme sprigs in a loose aluminum foil packet.
Step 4: Place packet in a baking dish and roast until garlic is very tender.
Step 5: When cool enough to handle, peel garlic and squeeze soft cloves into a bowl.
Step 6: Place potatoes in a large saucepan and cover by 1 inch with cold salted water.
Step 7: Bring to a boil over moderately high heat.
Step 8: Cover and cook until potatoes are tender.
Step 9: Drain.
Step 10: Mash potatoes with a potato masher and return to a clean saucepan; stir in cream, butter, and garlic cloves, and beat well.
Step 11: Season to taste with salt and pepper.
Step 12: Transfer to a warm bowl and garnish with minced chervil.