i just bought this yeast today. got it home and smacked it. within an hour it started to swell and 2.5 hours its quite swollen at room temp (at 18-21C - 64-69F) the manufacturing date is dec 27 and it is now january 7th. not sure if the age of the yeast is the cause of the fast start (considering most people that have noticed a slow start have had yeast over a month old and some quite older). plan to pitch it to a 3L starter. i will update on the how the starter and the batch takes once i pitch