To start with, mix the corn, olives, red bell peppers, and onions into a large bowl. In a smaller bowl, put together garlic, olive oil, lemon juice, cider vinegar, oregano, salt, and pepper. The corn mixture can then be added to this secondary mixture before they are thoroughly combined together. At this point, the dish needs to sit overnight in a refrigerator. The avocados should be added into to the mix right before the dish is served.
Essentially, this makes Salsa Roja the Mexican equivalent of BBQ sauce: An all-purpose condiment with a secret recipe. Every Mexican grandmother has her own recipe and hence every family their own, “authentic” Salsa Roja recipe. In other words: as with so many other Mexican dishes and sides, there is no authentic, codified Salsa Roja recipe! To each their own! And thank God for that. This is exactly the beauty of this condiment. Every chef can (and should) tweak it to their own liking – as I have done with mine!
I just made this wonderful salsa a couple of days ago with roma tomatoes. I 4X the recipe and ended up with 32 pints of salsa. We liked it so very much I am thinking of doing more with the 1 1/2 bushels of regular tomatoes that I have. Do you think that the regular tomatoes would have too much liquid in them or would the draining take care of that problem? I didn’t add the paste last time so I would probably add it for sure to make it thicker.