I did use a refractrometer. I'll do a hydrometer reading today. The yeast was Windsor. I can't believe it was finished. It was a little bit over 1 day. Even if the initial pitch went dormant, why would the repitch take off?
Just a quick one for the forum. I pitched yeast into my most recent batch of Porter. The temp was a bit higher than normal (27 C), but it took off like a monster. By 8 AM, pressure through my airlock was boring my carboy down towards the center of the earth. I looked at my temp and it was off...