No. Grappa is a distilled spirit like brandy or Bourbon. It's too strong in alcohol and in flavour to substitute for white wine. It can be used where dishes require brandy say for flaming off the juices from a cooked steak. White vermouth though stronger than wine in alcohol can sometimes be a substitute for white wine particularly if you want to add a herby mediterranean taste.
yes of course
Yes, any good quality white wine can be used instead of sherry.
baking powder
butter or PAM!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Dry white wine is normally used for savory dishes. Sweet white wine is rarely used in cooking.
Cooking oil or ghee are both good substitutes.
Flour and flower are homophones. "Flour" refers to the white powder used for cooking, while "flower" is the colorful part of a plant.
No
Caucasian people
a large white type of kidney bean, much used in Italian cooking
flower and flour
No it can not. But it can be used instead of diesel if your engine is suitable or has been modified to take biological fuel.