What is Corn syrup?

A common ingredient in the US made by adding enzymes to corn starch, turning it into a thick syrup of dextrose, maltose and/or glucose.

It comes in two styles - dark and light. Light corn syrup is very sweet, like golden syrup while dark corn syrup has a molasses flavour. It's used widely in the food industry for sweetening soft drinks, alcohol, ketchup and pickles. The light version is available in the UK in larger supermarkets, but the dark molasses type is harder to find.