Robust porter, Doppel, Dark Holiday Ale, Cream Stout, Cream Ale, Vienna Lager (awful don't try it), and an American Strong Wheat
Darker the beer the longer I leave it on the beer. Doppel Porter and Stout 10-18 days, Best was 10 days in secondary. Cream Ale, Lager, and Holiday Ales 7-10 days, I prefer 8 days. I also used them in a secondary, I just brought water (1 cup) to boil then killed the heat, tossed in the split beans, and then pitched it in the bottom of the 2ndary and racked on top of it. I treat them like a dry hop.