Starbucks have their own brand of syrups and Costa tend to use Monin. This gingerbread latte syrup is the same in principle: it's a concentrated flavour so only a little is needed in a drink to add flavour. However, I have not tried to mimic either the Starbucks brand or the Monin gingerbread syrups here. Instead, I've created this recipe based on the ingredients present in a typical gingerbread cookie recipe.