This question is probably a little bizarre, but I'm curious both for reasons practical (originally) and now also hypothetical. I am going to be backpacking in Central America for a few weeks later this month and I want to bring soy milk powder so that I can keep my pack light but have soy milk available for breakfast and stuff. I know that I can buy the Better than Soy, assuming that I can find it in my town, but I came up with a theory after noticing that Silk Light is made primarily from soy flour and water rather than whole soy beans.
Is it possible, if I could come up with the correct measurements (or if anyone has suggestions?) to put together soy flour, some evaporated cane juice, and maybe some b12 in powder form, that I could just add water and make a decent soy milk on the go?