No I have not replaced any fermentables. I've made a Honey Bee ale, Honey porter, honey belgans... Always, IMO, keep it at the 30 min mark. The honey flavor is great. If u want more of just an essence add it at the 10 min mark. Honestly adding honey is a great idea. Then when you tire of honey try agave nectar, fruit purée, and so many other options. Even try different honey options.