This recipe looks great. As for more coconut flavor I would do what Maui Brewing Co. does with their award winning Coconut Porter and use coconut at almost every stage of the process. The owner talks about it on the Basic Brewing Radio Podcast, 11-15-07.
They use coconut in the mash, the boil (now they use a hop back) and even serving tank. The only place they don’t use it is in the fermenter. They toast the coconut to a “deep golden brown”, which helps in head retention and flavor and “adds nuttiness”. They use non-sweetened coconut flakes.
They use 200 lbs coconut in each 20 barrel batch. I have no idea what that translates to for a 5 gal batch??
I am REALLY curious as to how the rum worked out in this recipe. Does rum go well in a stout? What types of rums and what quantities have people used?