Fresh cilantro would decrease the acidity, Rose, so I’d be careful – maybe 1/4 c. but then decrease the onions or peppers by a couple tablespoons or increase the vinegar by a tablespoon? I like to play it safe – I know many people can salsa that’s full of fresh ingredients, but food is just not worth playing with for me, so I try to go by the book. Personally, if we want cilantro, we add it when we use it – it tastes fresher then, too. 🙂
Douglas, I was just wondering about using the iron skillet or comal and the tomatoes. I tried a different recipe the other day and used my iron skillet to toast the ancho chilies, tomatoes and serrano peppers it called for. After blending all the ingredients, I used the same skillet to heat and cook the finished sauce. I only thought about it after the fact and wondered if the acidic sauce changed in flavor by using the iron skillet. I am sure our grandmothers used their iron for everything and never worried about the acid in them, so I am sure this question is moot, but I still want to know. I am not a very good cook, even though I try, and last weeks sauce did not turn out very tasty. I am going to give this one a try and hope it comes out better. Thank you for posting this.