1. Chill oil in the freezer for 30 minutes (this helps it emulsify). Pulse garlic in a blender with ¼ cup cold oil, lemon juice, and 1 tablespoon ice water until smooth. With motor running, slowly add ½ cup oil. Scrape down sides and continue to blend, adding remaining ¼ cup oil, until a thick, bright white paste forms. Add remaining ice water, season with kosher salt, and pulse to combine. Store in refrigerator.