I started home-brewing lager beer last year. I am using ready-kits and the first three times it went quite well.
Now, with the latest, I had a very strange problem. A couple of weeks after I bottled them up and put in the cellar I found some bottles broken. I tried to open other bottles and they had a LOT of "air" inside an a lot of foam came out.
What could have been happened? What are the possibilities of this behavior?