We're drowning in oranges and mandarins and I'm trying to keep up by making gallons of jam... I've finally run out of jars; anyone know the most economical place to buy supplies locally? (Oakland area best; SF OK.) I'm talking buying upwards of 100 jars, so a dollar or two here and there per box makes a bit of difference.
Also, in the past I've picked up a few boxes of 20-year-old Kerr and Ball jars that work fine, but would love to try using some of the beautiful blue-tinted jars for sale all over eBay, etc.
I can think of all sorts of potential problems: screw threads don't fit modern lids, cracks I might not see that result in a broken or leaking jar, jars not withstanding prolonged heat of a water bath...
But that's being a pessimist :) Has anyone successfully used really old jars for canning? All I ever make is jam and chutney and I can them in a water bath on my stove.