What alcohol has the highest sugar content?

Well most alchohol is created through fermentation of different kinds of fruit and crops, so all alchohol was essentially 100% sugar. The yeast eats the sugar, and out comes the bi-product alchohol. I guess you could buy some really cheap wine that hasn't gone through the whole process, so most of the sugar is still sugar.

There are of course also alchoholic beverages with added suger, mostly variants of vodka and rum. I would consider those to be the alchoholic beverages with the highest concentration of sugar, though I might be wrong.