Hi, I just found this site and this is my first post. The veg you probably mean is celery root, or celariac. the recipe is in the Eat Great Lose Weight book , and since this is not her site I think I can post it ok. 3 celery roots, 1/4 heavy cream, 4 Tbls butter, salt, pepper. Peel roots, cut into smaller pieces, cook till tender. Put in food processer, add all other ingredents and puree till smooth. We love this!! We have had it with beef roast and used gravy with it. It does not taste a lot like potatoes but sure is a wonderful substitute. and is so much better for you than potatoes. You may find it hard to find celery root, but just ask the produce person, the WOE is becoming very popular and a lot of markets are now stocking the more unusual vegs and fruits. There is a web site you may like too, it is loaded with recipes for SS. www.homestead.com/slgkali/recipeindex.html
Denise