1. Follow the directions instructed on the back of the dry dressing mix package with the following adjustment: Instead of adding all regular vinegar to the V line on the cruet, add 1/2 cider vinegar and 1/2 balsamic vinegar.
2. Tastes great on greens!
3. I think it tastes it's best at room temp; so it would probably last that way for a few days; after then if it's not used, throw it in the fridge.