I mixed up some boiled DME and water on sunday, cooled it and fed it to some yeast in my 1G jug, plugged and airlocked it. I planned on using it that night (it was dry yeast) and figured that I would give it a head start. This is my normal procedure. However, I never got to brewing that day. My starter went active, fermented, made a nice little yeast cake and appears to have settled down. Can I still use this yeast in today's brew? I can't see why not, but I wanted to ask first. It has been completely sealed all the time, and actually looks like a mini Ale brew!!