To make chipotle purée… Add a whole can of chipotle in adobo sauce in the jar of a blender and process until smooth. The next step is to measure 1 tablespoons and place it on a baking sheet. Transfer to the freezer until hard then put the frozen tablespoons in a re-sealable plastic bag and keep in the freezer. When needed, take a frozen tablespoon of chipotle in adobo sauce (or more as needed), place in a bowl and let sit until it becomes soft enough to mix. Proceed with your recipe.
To make chipotle mayo… Add a tablespoon at a time of mayo (not Miracle Whip) to the puréed chipotle in adobo sauce until it suits your taste. Voilà! You've got yourself chipotle mayo anytime you want -- Enjoy!