Drain and rinse the black beans and corn then place in a large bowl.
Add the diced tomato, red pepper, and red onion along with the avocado oil, lime juice, minced garlic and cilantro and season well with sea salt and fresh ground pepper.
Give the salad a good mix to combine, then add the diced avocado and gently mix through.
Notes
If preparing the salad ahead of time, save cutting and adding the avocado until you are ready to serveCanned corn can be substituted for fresh or frozen if that's what you have on hand.