This is the cubed, curdled chicken Dugo (Blood) of a chicken. It’s grilled and usually dipped with suka (vinegar) and onions. The street food got it’s name because of its resemblance to the betamax tape.
Mix the chicken blood, salt and pepper in bowl.
Boil 3 cups of water and pour in the mixture.
When the blood thickens, drain the water and let it cool.
Cut into cubes and skewered. About 4 or 5 pieces per stick.
Grill the blood while basting with the mixture of banana catsup, soy sauce and oil.