Clean all the pork offal by rinsing with water mixed with salt, then rinse again with clean water. Bring a pot of water to a boil with ginger and lemongrass, then add each type of offal and boil until cooked. Remove and slice into bite-sized pieces.

Finely chop the garlic chives and sauté them in cooking oil, then drizzle over the banh hoi. Mix fish sauce with lime juice, sugar, garlic, and chili to make a dipping sauce. Arrange everything on a platter and serve.