*I believe a real vanilla bean or some vanilla extract would add quite a bit of flavor to this but I didn't have any to test. If using vanilla extract add it after the boil so you don't lose it from evaporation. Try it out and let me know!
*Most recipes call for whole cloves to be boiled with the mixture. Cloves contain a high percentage of eugenol which causes your tongue to feel slightly numb. I tried as few as 2 cloves and still encountered this. I prefer mine without any cloves but if you like the flavor or are not as sensitive as I am you may enjoy putting in a clove or two. Adding at the end of the boil is also a good option.