The Definitive Mashed Potato with Roasted Garlic

INGREDIENTS

• For the Garlic Paste:
• 2 whole garlic heads
• 1/2 cup pure olive oil
• Gray sea salt and freshly ground pepper
• 2 pounds Yukon Gold potatoes
• 1 1/2 sticks unsalted butter, at room temperature
• 1-2 tablespoons garlic paste, more or less to taste
• 1 1/2 cups heavy cream
• Sea salt, preferably gray sea salt, and freshly ground black pepper
• 1/2 to 2/3 cup extra-virgin olive oil