One large can of Rotel, 4-6 peppers( I use serrano chiles), one medium onion, 1/3rd to 1/2 bunch of cilantro, 2-3 cloves garlic, salt, cumin & lime juice.
process the peppers, onion and garlic in a food processor, add in Rotel, salt, cumin, & lime juice, pulse a couple or three times and finally add in cilantro and pulse a few times again. You can substitute fresh tomatoes for the Rotel, just process them first if you choose. Some chipotle adds a good flavor
I forgot to add, I never measure anything. Salt= approx 1½ tsp, cumin= approx 2 tsp lime juice, approx 1/3 bottle of the squeeze lime.