For awhile we were using ghee as part of our son's gluten free/casein free diet. Now we have found what we feel is an even better alternative. It is Earth Balance Natural Buttery Spread. The cheapest place to pick this up in Utah County is Sunflower Farmer's Market. As compared to ghee, you get much more for your money.
*varieties include a soy-free option
I admit, the vegan aspect of this product is a big draw for me. According to The McDougall Plan, by John A. McDougall, M.D. and Mary A. McDougall, the higher you are on the food pyramid, the higher the amount of fat-soluable contaminants your food will contain. For example, the grains on the bottom of the pyramid will have the lowest amount of contaminants, while the breast feeding child on the top of the pyramid will have potentially the highest.
Concentrated contaminants can be avoided to a large degree by eating vegan. Another more current book on this subject that is very popular is called The China Study. I personally haven't read this one yet, but I plan to in the near future.
My family and I do not eat vegan, but since learning more about the health hazards and also the markets promoting meat and dairy products, meat has become much more sparse in our home. It is used once in a while for a flavoring, not as a main course. As for dairy, Eli does not eat dairy, and products like Earth Balance make limiting dairy so much easier for the rest of the family.