With only three ingredients salt, potatoes and extra virgin olive oil, and you are rewarded with a divinely creamy and buttery dish of mashed potatoes. Yukon Gold potatoes have a naturally unique buttery flavor with no butter added! Ordinary salt is one of the ingredients here. Use any salt you like, but (imo) great salt will give even more great flavor! I can't wait to try this with different varieties of salt to discover the differences. I think this recipe leaves lots of room for experimenting with flavored or infused extra virgin olive oil and various salts. Experimenting is half the fun! Let me know what you use please. I am so interested! I do not know much about Kosher or Jewish food and cooking but I think these might even work well there as well. Discovered in Gourmet Magazine, Paris! 9/2008.