Tonight I made a starter for an upcoming brew this weekend that will use WLP007 (Dry English Ale). When I shook the vial to get the yeast into suspension I noticed that there was a rather hard (almost solid) plug of yeast that took quite a while to break apart. So I was wondering if anyone else has experienced this with this (or any other White Labs) yeast. I'm guessing that this was perhaps the result of a very heavy flocculation? Any ideas, comments, etc? I did go ahead an pitch it into the starter wort. FWIW, here is a picture after I shook it up, but before pitching. When I pitched it was still quite clumpy, but seemed to disperse into the wort.