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Q. My mixed culture from <nowiki>[X]</nowiki> yeast lab expired. Can I make a starter with it or use it?
A. Yes, make a starter with it. If the starter shows signs of fermentation, then the mixed culture can be used in a full batch of beer. Signs of fermentation include a drop in pH, gravity, or if those measurements are not possible, bubbles/CO<sup>2</sup> production and turbidity (cloudiness). If a full krausen does not form, then pitch an additional fresh package of brewer's yeast (a Belgian or saison strain is a good choice, but any strain will suffice). Mixed culture starters should go for about 7 days. See [[Mixed_Cultures#Starters_and_Other_Manufacturer_Tips|Mixed Culture Starters]] for more details.
==When can I bottle/blend==