I was going to brew a Octoberfest this week and pitch it on top of the yeast cake from a Munich Dunkel, well I got sick and could not brew and I needed to keg the Munich up yesterday, and am a little nervous about pitching into a dirty carboy so I kegged the munich and put the yeast cake into a sanitized growler and put it in the fridge yesterday, my question is, will it be ok in the fridge till Thursday and just pitch the whole cake or should I wash the yeast and make a starter and pitch that Thursday? Any thoughts on this?