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Thank you for all  your responses on how to make Buttermilk. I got just about
the same advice...Buttermilk is soured milk -add lemon juice or vingear and
let sit.

Buttermilk Culture - also available in yoguart & kefir

milk substitue -use plain soy milk -add 1-2 teaspoons of lemon juice or
apple cider vinegar -let sit for 5 min. note: will not work with Vance's
Dari-Free

http://www.nomilk.com/buttermilk.txt

Saco brand powdered buttermilk

Thank you for all your help and ideas..

Sharon