Robert,  It was mentioned a few months ago on this list  to use mashed
potatoes to cream or thicken a soup.  It worked well for us!  Good luck with
the soy formula!

Robert Cohen 1-888-not-milk wrote:

> Dear NOT-MILKERS,
>
> I am about to surprise my family with a bit of an experiment...I love to
> cook soups and have my freezer stocked with chicken soup, minnestrone,
> lentil and black bean.
>
> Today I went to the supermarket and bought a case of soy-based baby
> formula.  Tomorrow I plan to create some new dishes...How does Cream of
> wild mushroom soup (cepes, morels and portabellos), cream of broccoli
> soup, New England fish chowder and vicchysoisse sound?  (Yeah, I know it
> sounds lousy---made with baby formula, but what the heck...here goes
> nothing!)
>
> I went to the Culinary Institute of America in Hyde Park, NY in 1973 and
> love to cook!  This could be the start of a new cuisine!
>
> Robert "NOTMILKMAN" Cohen
> http://www.notmilk.com