I made a yeast starter on Thursday that I was going to use on Saturday to help my buddy make his first batch. However, my friend had to cancel the brew day, and we rescheduled for this upcoming Saturday. Will my yeast starter still be good if I keep it refrigerated, or will I need to make a new starter?
Absolutely no problem with using the starter as is. After a month of refrigeration, if it was a very minimal starter, I might consider a small starter wort to revitalize the yeast.
Yes, no problem. I do it all the time. I always cold crash for a few days, and then decant, leaving just the yeast layer.
