I'm reading up on Bay Rum home recipes and this part from Amanda catches my interest, as I'm thinking of going the dried route instead of any essential oils. Instead of vodka, I'm looking to use a high proof (63%) white jamaican rum along with some dark jamaican rum (57% proof). Bay Rum's in the day had the "buttery" hint from the Jamaican rum and I'm hoping to impart this as much as possible. My thought is I'll get the better essence extraction from using the higher proof white rum + get a little of the dark rum's wood benefits as well. Best of both worlds in a way. Would the double boiler process imply after everything is combined (short of any moisturizers / astringent additions completed at the end) to slow boil the solution while keeping a thermometer in the solution so as to make sure it doesn't reach beyond 165 degrees Fahrenheit? Making sure along the way to keep some good aeration going since the vapors are pretty flammable? If yes, how long should the double boil run for once the temperature is reached? 30 minutes? More or less? Great thread and thanks for the feedback. The experiment will be to have three aging batches of 4 weeks, 8 weeks, and 12 weeks.