Isaw is a popular Filipino street food made from chicken or pork intestines that are cleaned, marinated, and grilled on skewers. The intestines are typically boiled first, then marinated in a savory mix of vinegar, soy sauce, garlic, and spices before being grilled over charcoal, giving them a smoky, flavorful taste. Isaw is often served with a side of vinegar with chopped onions, chilies, and other seasonings for dipping. It's a beloved snack and can be found at many street food stalls across the Philippines, especially in bustling markets and popular food spots.