What is "dinuguan"

Dinuguan (also called dinardaraan in Ilocano, tid-tad in Pampanga, dugo-dugo in Cebuano, sinugaok in Batangas, rugodugo in Waray, sampayna or champayna in Northern Mindanao and tinumis in Bulacan and Nueva Ecija) is a Filipino savory stew of pork offal (typically lungs, kidneys, intestines, ears, heart and snout) and/or meat simmered in a rich, spicy dark gravy of pig blood, garlic, chili (most often siling mahaba), and vinegar.