I think that the sour milk in this specific recipe is intended to react with the baking soda and act as a leavening.
The optionally pareve Black Magic Cake that I make is -- 2 t bsoda, 1 t bpowder, 1 t salt, 1c coffee, 1c buttermilk/coffee rich. I wonder, then if the coffee rich is acidic in some way? Personally, I would try the soy milk. Maybe with the lemon juice, but I would end up accidentally adding too much vinegar, so make sure to use less than I would! :-)
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gnomi
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Date: 2006-07-07 01:05 am (UTC)The optionally pareve Black Magic Cake that I make is -- 2 t bsoda, 1 t bpowder, 1 t salt, 1c coffee, 1c buttermilk/coffee rich. I wonder, then if the coffee rich is acidic in some way? Personally, I would try the soy milk. Maybe with the lemon juice, but I would end up accidentally adding too much vinegar, so make sure to use less than I would! :-)