Wash 1 cup of fresh cilantro under cold water, then roughly chop it, including both stems and leaves for maximum flavor.

Slice one jalapeño and remove the seeds if you prefer a milder sauce. Peel two cloves of garlic and squeeze juice from two fresh limes, aiming for about 2-3 tablespoons.

In your high-speed blender or food processor, add the chopped cilantro, lime juice, jalapeño, and garlic. Follow with ½ cup of mayonnaise. Blend on high for about 30 seconds until smooth.

Check the consistency of the sauce; if too thick, add a splash of water or an extra squeeze of lime juice. Blend for an additional 10 seconds.

Once blended, pour the sauce into a clean squeeze bottle or airtight container. Store in the refrigerator for up to a month, but use within a week for best flavor.