Puka means hole in Hawaiian, so what they do here is poke a hole lengthwise through the roll instead of slicing it in half. Then they put in some secret sauce, tropical fruit relish, tropical fruit mustard and cap it off with a polish sausage.
I went with garlic-lemon secret sauce, pineapple relish and guava mustard. It's one of the best hot dogs I've ever had. Jen got the same secret sauce, mango relish and lilikoi mustard. Yum!