This is in my family's "Top 10" list. Quick and easy and very good. I found it in the food column of my local paper (San Jose Mercury News) several years ago. Addendum: I couldn't find tomatillos in the grocery store when I wanted to make this recently. I substituted an equivalent sized bottle of "Salsa Verde" and got nearly the same results. Just look for one that the primary ingredient is tomatillos.