Basil Mayonnaise

From http://www.thekitchn.com/. Tastes great in sandwiches, such as a BLT.

• Ready In: 5 mins
• Yields: 1/2 cup

Ingredients

• 1⁄4 cup  packed basil leaves
• 2  tablespoons olive oil
• 1⁄2 teaspoon lemon juice
• 1  medium garlic clove, chopped
• 1  lemon, zest of
• 1⁄2 cup mayonnaise

Directions

1. In a blender or small food processor, combine the basil, olive oil, lemon juice, garlic and lemon zest. Do not add the mayonnaise, as this will turn everything to liquid.
2. Process until finely chopped and relatively smooth, scraping down the sides of the bowl occasionally. (Large, tough basil leaves will probably stay fairly chunky, which is fine.).
3. Place the mayonnaise in a small bowl and whisk in the basil mixture until thoroughly combined. Store in the refrigerator, where it will keep for up to a week, though the color will dull after 2 days.