I finally had the well-known Hawaiian delicacy - the Spam Musubi at the Island Grill, in Portland. A rather small rice blend with a slice of grilled spam wrapped in nori dried seaweed. Very similar to Japanese Onigiri but of course the distinctive difference is the Spam. The owner of the food stand advised me to pair it with a decent dose of Sriracha, an advice that I followed. The result was a tasty, afternoon snack for a day that I missed lunch.
Next time I will get two of those. They are unique and delicious!