Bring a small pot of water to a boil. Add the basil leaves. Remove after 5 seconds and place into ice water for 5 more seconds.
Strain and use a paper towel to pat them dry.
Add the basil and the remaining ingredients to a high-speed blender. Blend until smooth.
Strain through a two-ply cheesecloth.
Store in an airtight container in the refrigerator for up to 1 week.