Purée the can of chipotle chiles in adobo sauce in a blender until smooth.

Place mayonnaise into a small bowl.

Stir about 1/2 of the blended chiles into mayonnaise. Taste. Add more chiles, if needed, until you have the taste you like.

Store, covered, in the refrigerator, until ready to serve. (Can be done up to 3 days in advance.)