I am brewing a bourbon barrel porter. The kit comes with 2 oz of oak cubes. The instructions state to add to secondary, with bourbon. The general notes mention bourbon infused oak cubes. So, should I just add the oak cubes and the bourbon like the recipe states, or do I soak the cubes ahead of time, and if so for how long? And between now and then is there a recommended storage for oak cubes, ie, refrigeration or ? they are currently in a sealed foil pouch.