Roast four heads of garlic (instructions available here). When cooled, remove roasted cloves. In a food processor, combine roasted garlic, 1 can of chipotle chiles in adobo sauce, 1/2 cup extra virgin olive oil, zest of two limes, juice of one lime, 2 teaspoons salt, 1 teaspoon onion powder, and 1/2 teaspoon dried thyme. Pulse…