Just looking at my bag of corn sugar I would say that if you look closely it looks closer to corn starch (powder like) than table sugar, which is sort of gritty when you look at it.
Drinking: Ed Worts Apfelwein, Store bought Bass, Salvator. Can't brew in Winter and I needed bottles.
Primary: Bass Clone Austin Home Brew Supply
Went down in a blaze of glory due to mold infection.
ON DECK: Moosebutt Faux Lager