Probably you can since both are derived in one way or another from white grapes.
All vinegars are weak solutions of acetic acid in water, and are produced through fermentation of sugar-containing substances of one sort or another. Balsamic vinegar is an Italian concoction made from the must of the white grape; sherry vinegar is fermented from sherry (of course) which is a fortified white wine of Spain.
You could also use plain white vinegar and add a bit of sherry or white wine. Each will impart a slightly different flavor.
Try an equal amount of balsamic vinegar.
no. You can not substitute any other vinegar for balsamic and get the same flavor.
yes because it is a good substitute.
White wine vinegar would be the best substitute, if you have it on hand.
It depends on what you are making, but I would not recommend it.
If color is not important, red balsamic vinegar would be the best substitute for white. Otherwise, a sweet white wine would be a possible replacement.
You could substitute rice vinegar for cooking sherry. Rice vinegar has a mild, sweet flavor.
You can, but white balsamic tastes stronger than white wine vinegar, so you may want to reduce the quantity that you use.
No, vinegar contains no wine and tastes very different than sherry.
Yes, if an acidic factor is all you are interested in. Sherry vinegar would be the next closest substitute but the taste of dry or sweet sherry for a sauce or marinade is fairly distinctive and to a discerning palate, quite noticable.
You should be able to. It would change the flavor slightly.
Absolutely but you might want to dilute it a bit with olive oil/ Throw in some herbs and there you go