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I had a can of pure Soy Protein drink (unflavoured) that I wasn't using. Combined vital wheat gluten flour and soy protein flour in 50/50 measures and mixed well. Added water until all the flour was in a ball and kneaded for a couple of minutes. Cut into 8 slices and steamed for 20 minutes.
The results, fantasic! Holds together very well (unlike using soy mince and gluten flour) and doesn't have the weird rubberyness of gluten.
I used it to make Char Siu and it was stunning.
posted by Jeff W