Question: what are the main ingredients in wine?
Answer: GRAPE MUST (SKIN AND SEEDS) First things first: To make wine, you need grape must. ... 
YEAST. Two types of yeast are used in wine making. ... 
More:The history of wine in America. The second is cultured yeast that is added to the grape must. ... 
SUGAR. ... 
ACID. ... 
SULFUR. ... 
FINING.