xtsho
Well-known member
The soy based amino acids are going to be derived from Okara which is the leftover solids after extracting soy milk. I make my own tofu from soybeans and save the Okara, dry it, and add it to soil. I would never pay money for amino acid products as easily obtained sources are close to free. With bottled products a good percentage of the cost is the packaging which is later discarded. You pay for the convenience of just measuring out a pre-made liquid.
Toasted Okara
Toasted Okara