How long can wort sit in a carboy before pitching? I have done about 40 brews and have used both dry and liquid yeasts. Recently I used a dry yeast that my local homebrew doesn't carry. There were no signs of fermentation after 24 hours so I considered getting an equivalent liquid yeast from the local shop. Thankfully the visible fermentation started so I didn't have to use the liquid yeast. Had I needed to use the liquid yeast would I have had enough time to make a starter? The wort would have been sitting in the carboy for 4-5 days if I had used the starter.