Golden syrup or light treacle is a thick, amber-colored form of inverted sugar syrup made in the process of refining sugar cane or sugar beet juice into sugar, or by treatment of a sugar solution with acid.

It is used in a variety of baking recipes and desserts.

It has an appearance similar to honey and is often used as a substitute where honey is unavailable or prohibitively expensive.

Molasses, or dark treacle, has a richer color than golden syrup, and a strong, distinctive flavor. (source)

So can hamsters eat golden syrup?

No they can’t at all. It is far too sweet for them to eat.