Looking at my notes this was the fourth generation of this yeast and it was three months old, probably pitched around a cup or so of slurry. I wonder if an over/under pitch might affect the nut flavor. My least favorite beer with this yeast was an oatmeal brown ale, it was ok just missing something. My favorite is this pale ale. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.