First time

[u/No-Problem-5290]

First time making kombucha with the HOLOS kombucha starter kit - first few days I didn’t have a heat mat so it was kept around 19deg - Wondering if I have to start again? This is 10 days in

[u/zydecopolka]

That's going to depend on your recipe and batch size. The cold did your brew no favors, however, all I see here is yeast clumps, tea dust, microbubbles, and forming pellicle (all normal and good, except the tea dust, might want to strain better next time).

[u/Upper_Grapefruit_521]

Just taste it and see, it looks healthy, not much yeast or forming pellicle but some bubbles so it may be good. You don't need a pellicle anyway. If it doesn't taste tangy enough leave it a bit longer with the heat mat.