Puriferm UK-48 Hour Turbo Yeast | Brewers Yeast Powder | Wine Yeast for Wine Making | Dry Yeast | Nutritional Yeast | (Pack of 6)

Can I use corn sugar with this yeast?

How is this for mead with a gallon and 1/2 honey to 5 gallon batch? The last batch turned out at 25% with the blackberry and current turn out at 18%.

Can i use with grapes ?