I think I know why pirates are so crazy about rum. They go on and on singing about how much they like to drink it, but the truth is they’ve got a baker-pirate down in the galley making this cake. They just can’t figure out how to stick that in a song and still sound scary. You really must try this. It’s absolutely the moistest cake you will ever make, and it gets better by the day — although it rarely makes it to the three-day mark in our house. It’s so good that my 15-year old requests it for her birthday cake, which is in August. And it’s been…