This composed salad of beef and purple potatoes originated in Santiago, Chile, where it’s often served as a quick lunch. The dressing is a tangy, spicy mix, a good match against all the different textures. Some purple potatoes turn steely gray when cooked, but the color change won’t affect the taste of this hearty salad. I got this recipe off of the msnbc web site. I have not tried it but it does look very good so I thought that I would share it with you all.