Bubba says refrigeration, the get
Easy Cabbage Roll CbutteroleMelba's Jammin' It's a cabbage roll *cbutterole*. I make this all the time, 'though not the same recipe as the OP. Mine is based on my family cabbage roll recipe. It's just easier...
They're probably vacuum packed (was there a distinct 'pop' when you released the lid? With many vacuum packed food products once opened oxygen will begin to deteriorate the product, its flavor, texture, and color will suffer. If the company says ten days they probably know what they're talking about... I guess you can eat some now eat some in ten days, and eat the rest over say a month or two and note any differences... after ten days teh product will still be safe to eat but the company wants you to enjoy the product at its peak so you will want to buy it again. I know that once I open the wrap on bacon I can definitely sense the deterioration after ten days in the fridge.
Anyway, its not a very large jar and the product is relatively expensive... once you open a good bottle of wine I should hope you don't save that for for more than ten days either... with either product, if it's really good I can't imagine the olives or the wine ever going back into the fridge, what ten days, I'd probably finish both within the hour.
Good info:
Sheldon