yep...maple extracts...like vanilla extract. i use extracts all the time.
if you want to order online..you can look up maple extracts, maple flavorings. or just your regular grocery store.
this wouldn't be something he can pur on foods..but you can cook or bake with it, adding the maple flavor.
here is a link...it gives a recipe...but the nutrition facts are for the maple flavoring
http://www.barryfarm.com/nutri_info/...pleflavor.html