Preheat oven to 400°. Cut off pointed end of garlic; place garlic on a piece of foil, and drizzle with 1 tablespoon oil. Wrap tightly, and roast at 400° for about 45 minutes or until soft. Remove from oven, and let cool; squeeze pulp from garlic cloves. Place roasted garlic in a blender or food processor with egg and next 5 ingredients, and process, adding canola oil and 1/4 cup olive oil in a slow, steady stream, until mixture thickens. Refrigerate in an airtight container up to 4 days.
Quick Tip: Use about 1 cup of good-quality mayonnaise in place of eggs and oil.