Di-potassium hydrogen phosphate is an acidity regulator and is essential to guarantee no separation in tea and coffee of a variety of acidities. This has been the general consumer preference and is entirely harmless. It's an approved additive within the EU as well as numerous other countries (including the USA, where the FDA has granted it GRAS [Generally Recognised As Safe] status).

However, if you would rather not have this in your TOATS MYLK, let us know, and we can discuss your preferences.