As I think I mentioned before, if you would like your kefir grains to propagate more quickly, you can gently pull them apart and return them to the brewing jar. I did this about 3 months ago. The pieces I had after dividing them would be about the size of a peanut. Here, in my hand, you see what ONE grain looks like this morning. They can get very large. The big flattish areas you see are actually more like balloons, being hollow inside. Pretty amazing!