I saw an article in Rachael Ray's Magazine about 10 ways to remake potato salad. Number 5 was Chile and Cheese. I liked the idea but as normal for me I added some things that I like and omitted some things that I didn't want in there. In other words, I made it my own! I don't normally like to mess with potato salad, I like my southern potato salad and nothing else but this sure did change my mind! This is a great change of pace - a little spicy but not too much!!
Bring large pot of salted water to boil. Add potatoes and cook until tender, approximately 15 minutes; drain, do not peel. Coursely mash the potatoes; set aside and let cool. Transfer to a large bowl.
To potatoes, stir in onion, cilantro(reserve small amount for top of salad)and chiles. Combine mayonnaise and buttermilk. Add to potato mixture; fold in well. To this add cheese and toss. Sprinkle with reserve cilantro.