I haven't used a mother culture yet, only DVI cultures, but at some point I'll give it a shot. Recipes such as on NECM's website give initial acidification timing before rennetting based on DVI cultures, so they have time to hydrate, wake up, and start multiplying and getting initial acidification going.
All other variables being the same, if one were to use the equivalent amount of mother culture, should the initial acidification time be reduced? And if so, what's a good rule of thumb for the time adjustment?
Alternatively, is there a rule of thumb for how much mother culture to use that gets you in the ballpark of the same DVI time before rennetting, so instead of adjusting time you just adjust amount mixed into the milk instead?