I made a oatmeal stout extract, and while reading a blog about fat washing I decided to try some peanut butter in it. I let it sit in primary for about 3 weeks and racked it into secondary onto the peanut butter. After one day the airlock started bubbling again and kausen rose about an inch. Its day five and the airlock is still bubbling about once every 5 seconds. I just wanted to get some opinions on this, and make sure that is slightly normal