First, cut the cleaned cactus pads or Nopales into small pieces.
Place in a large saucepan and cover with water.
Add about 1 tsp salt.
Let boil over medium heat for about 20 minutes or until softened.
Drain in a colander, then rinse under running water in the sink. Set aside.
In a serving bowl, Put the diced tomatoes, chopped cilantro, the diced onions, minced garlic, the cooked cactus and the avocado.
Add lemon juice on the avocado.
Add a pinch of salt( or to taste).
Add oregano and olive oil.
Gently mix everything.
Enjoy.