So I was given some kefir grains by a friend and I tried it for the first time in my smoothie this morning. I let the 2% milk ferment for 36-48 hours. I put about 1 cup of the fermented kefir in my smoothie this morning.

I used a keto stick this afternoon and it didn't show a change in colour... however, I drank a lot of water at the gym today. So I'll test again later tonight to see if the strips show that I'm still in ketosis. I might have to let it ferment longer. Does anyone here use whipping cream or coffee cream instead of milk? I might try that, since it has 1/2 the carbs.