Brazil's indigenous Guaraní people have been eating the heart of the pupunha palm (palmito) for centuries. Traditionally they would keep the whole heart encased in its tough outer casing and roast it directly on the fire. Since 1985, Otto has been recreating this dish at his Zona Norte restaurant in Tijuca. The whole heart (approx 2ft / 60cm long) is wrapped in foil and roasted directly over hot coals. Once tender, the outer casing is split open and the delicate palm flesh is seasoned with butter, parsley and capers. The end result is a delicate, melt-in-the-mouth dish, reminiscent of asparagus and artichoke hearts. Otto says that eating this traditional dish is a great way to reconnect with Brazil's indigenous roots.