 It is constituted by cheese (typically Colonia, of Uruguayan origin), olives, longaniza, salami, chips and salted peanuts; peanuts and other snacks are served on small pots and all of the other ingredients are served on a wood table with slices of bread.Matambre relleno is a common dish in Rio de la plata, both in Uruguay as in Argentina.It is one of two dishes prepared from matambre, a meat cut that is a flank steak.