A bit of a back story: I work at a bar that currently sells a lot of drinks using the commercially available Acid Phosphate by Extinct Chemical Company that you can also find online through artofdrink.com
I am looking to make our own solution in house as the commercial quantities available to us are cost prohibitive for the amount we are currently consuming. I would like help in formulating a recipe to be able to mix a similar souring agent in 1 to 5 US gallons quantities.
Hear is what I know: the solution consists of phosphoric acid water and buffering agents to maintain a pH between 2.0 and 2.2.
Food grade phosphoric acid is available in 85% concentrations in water.
The buffering agents are some combination of calcium carbonate, magnesium, and potassium.
so I am looking for something along the lines of use X weight of calcium carbonate, magnesium, and potassium, X weight of the 85% concentration phosphoric acid, and X weight of distilled water. Which should yield a total volume when mixed equal to 1 gallon.
Thank you in advance, if I can help clarify any further I will be happy to do so.