Does syrup have gluten or casein?

Syrup:

Syrup is a thick, viscous liquid made from boiling sugar in water or other liquids. Depending on the source of the sugar, syrup may contain gluten or casein.

Gluten:

Gluten is a protein found in wheat, rye, and barley. Syrup made from these ingredients will contain gluten. However, syrup made from other sources, such as corn or rice, will be gluten-free.

Casein:

Casein is a protein found in milk and other dairy products. Syrup made with dairy ingredients, such as milk or cream, will contain casein. However, syrup made without dairy ingredients will be casein-free.

When in doubt, it is always best to check the ingredient label of the syrup to see if it contains gluten or casein.