Begin by gathering all ingredients on your kitchen counter.
If using fresh corn, boil it for 5-7 minutes, then cool.
Dice the red bell pepper and red onion finely.
Minced jalapeño can be added for heat, depending on preference.
Chop the cilantro and set it aside.
In a large bowl, combine the corn, diced bell pepper, and onion.
Add the minced jalapeño and cilantro to the mix.
Squeeze the lime juice over the mixture, adding salt and pepper to taste.
For added creaminess, fold in diced avocado gently.
Mix everything well and taste; adjust seasoning if necessary.