I picked up 14 boxes of Sure-jell today from Freecycle - close to DS's dentist appt, not out of my way. I thought the lady said she bought them in 2010. Turns out they expired in April/May 2010. I don't tend to use much pectin (use the fruit instead) but have tried the Ball N-S kind. Figured this would keep me set through the winter making jelly from storebought juice. Now I don't know.
Would you suggest making a test batch (1C of juice to 1-1.5 Tbsp pectin?) each time I use a box? Is there a way to do the alcohol test with powdered pectin (maybe mix it with the juice, but not sugar, then try a Tbsp with alcohol b4 heating the rest and adding sugar?)? Hate to waste it, but hate to waste the juice/fruit more. Thanks.