Thanks IslandGirl! I will check it out!

Jeanyyy: I tried it, and I really like it, it's true that there is this special sensation in your mouth. I searched a bit on the web and I found out that the bacteries in kefir multiply at room temperature in 24h, so yesterday I took about a cup of kefir, put it in a bottle on the counter and added milk ... today, I had a whole bottle of kefir waiting for me!

have a great day
Zab