Did you all have to email them photographic proof of the achievements? Got an email asking me to do that this morning, and I can't really be arsed (but I probably will - is there a list of achievements I can view online anywhere?)
It was probably about 1.5kg. I think the temperature was too low, seems unlikely the connective tissue would breakdown at 56 degrees. I'll stick to steaks for the time being (have had some success there).