Active Time: 10 minutes
Full Time: 20 minutes
Bring a pot of lightly salted water to boil. Add corn kernels, cover and cook for 5 minutes. Once done, remove from heat and drain.
Mix onion, mayo, Tajín, and lime juice into a large bowl. Season to taste with salt. Mix everything well using a fork.
Add the cooked corn kernels, chopped cilantro, and Cotija cheese. Fold to incorporate.
Transfer to serving bowls, garnish with additional Tajín, lime juice, and cilantro.