I am about to embark on making my first gluten free sourdough bread. The Brown Rice Starter recipe that I'm using calls for water Kefir. The water Kefir recipe that I have calls for water Kefir grains. I purchased packets of "Kefir Starter" that is to be added to milk. I am trying to find out if this product is added to water, will it fulfill my need for water Kefir grains? Thank you!