A small glass of alcohol before a meal to stimulate the appetite.
Kir
White wine vinegar is made from wine but contains no alcohol.
Riesling is a type of grape, it is used to make white wines. Most famous are the German Riesling wines. A common misconception is that all rieslings are sweet. This is not the case, many rieslings...
Substituting one for the other would significantly change the taste of the resulting food.
No, because they are completely different.