Line a small metal pan or disposable aluminum baking dish with tin foil and set aside.
Husk corn and remove silk.
Grill over medium heat for 10-12 minutes, turning the corn every few minutes to get a nice char all around
4 ears corn
While the corn cooks, mix together softened butter, adobo sauce, cumin. Add a quarter cup of cotija cheese and a quarter cup mayo and stir again until fully incorporated.
1/4 cup unsalted butter, 1 tablespoon adobo sauce, 1 teaspoon cumin, 1/4 cup cojita cheese, 1/4 cup mayo
Remove corn from the grill and place it into pan. Add chipotle butter atop corn and cover the pan tightly with aluminum foil, then return to the grill.
Let corn steam in the pans, shaking occasionally to coat the ears with the butter. After three minutes, remove corn from the grill and remove the cover, being careful not to burn yourself with the steam.
Serve corn immediately, brushing on any remaining butter from the pan and squeezing lime over it.