The Jeffrey is an accidental blessing from a BC Purps grow I did a number of years back. I had planted some White Widow beans in with the purps crop. Unfortunately one of the widows was a male and it was able to mature enough to pollinate. So I got a few seeds from the purps and decided to give them a try. Jeffrey was the second bean I popped, and what a gem! It is a medium yeilder of dense pink/purple, extremly frosty buds. So far to date the frostiest strain I've grown. And that list includes Jacks Cleaner BX, Ak 47, UK Cheese, God Bud, Critical Mass, and OGK. Call it luck, I feel lucky at least!