What is meant by " I got grains the size of a walnut lately"?

y milk kefir grains also love the home pasteurised milk too, I got grains the size of a walnut lately, something I havenít seen before.Then again, they were dormant for about three weeks, kind of hibernating.
It appears they have woken up quite hungry, so I have to feed them the best milk Iíve got.
More about the milk kefir grains hibernating in my next post.


Source:http://kefirprobioticgrains.wordpress.com/