Old Wort

Yeast & Fermentation
1

I have about a half a gallon of wort in my fridge that I used for some yeast starters the last time I brewed back in January.

The gallon was a clean and sanitized glass jar prior to being fulled

I used it to step up some starters back in January

I’m gearing up to brew on Sunday and plan on splitting a vial of WLP007 into two starters

Can I use the wort I have or should I start fresh?

2

If it was frozen it should be fine as long as you boil it for at least 15 mins before making the starter. You should probably taste it too sour or funny tasting wort should be thrown out.