Glycerine increases the wine`s mouth-feel giving it a fuller, more pleasant texture. It smoothes over some of the harsh characteristics that are prevalent in most younger wines. It is a colorless, odorless, viscous syrup that has little noticeable flavor except for a slight sweetness. That makes it perfect for taking any red wine and turning it into a big, bold red. Glycerine can also be used in cordials to enhance their body.