Pour into quart jar:
3 c water at room temperature
add:
1 1/3 c dry powdered milk
Stir until dissolved. Add:
1/2 c commercial buttermilk
dash of salt
Stir until blended. Let stand at room temperature until thickened.
Stir just until blended. Refrigerate. Stir before using. Save 1/2 c
buttermilk to use as base for next batch.
