If made with vegan sugar (not all of it is) and Lyle's black treacle then this gingerbread simple syrup is vegan. If using alternative molasses, be aware that some molasses are manufactured as a by-product of a production process that involves animal products (bone char). Any molasses made this way is clearly non-vegan, so it's worth checking on the packaging to be certain. In both instances, this homemade gingerbread syrup is gluten-free.