I skipped the oregano and added a minced jalapeno. The kids didn't touch it but that just left more for me. Have been eating the leftovers on bean burritos and think I can say this is my favorite "slaw" type salad ever.

I agree with T.L. Curtido doesn't go inside the pupusas. It is served on the side. I like to cut up the pupusa and have some of the curtido (and tomato sauce) with each bite of the pupusa. Most of my friends puree a couple of roma tomatoes by themselves and use that as the tomato sauce that is usually served with pupusas. The sauce can be pretty bland as is but the curtido has strong flavors, therefore, the bland tomato puree kind of mellows it out. Talking about strong flavors, I don't use quite as much vinegar for the curtido as a personal preference. However, the amount stated in this recipe is right and it yields a very authentic curtido. It is supposed to taste vinegary.

The recipe is fine, but the description is not accurate. Curtido does not go inside of pupusas. It's served on the side after the pupusas are cooked. One should open the pupusa to expose the cheese (and/or beans/pork, etc.) This helps to cool it off. Then one should rip off a bite size piece of the pupusa and pinch a bite of curtido into that piece before eating. Some also like to pour salsa on top of the curtido before eating.