Saute the onions in 3 tablespoons of the olive oil over medium heat until brown. Remove the onions from the heat and drain on paper towels. Set aside. Put 3 cups of the water in a pot and bring to a boil.

Add the rice, a few drops of oil, and half of the salt. When the water boils again, reduce heat to a simmer and cook until the rice is tender. Add the lentils and boil until they are tender. Drain the rice and lentil mixture. In a separate pot, fill with enough water and a few drops of oil, and boil the macaroni until tender. Drain well.

In a small saucepan, saute the garlic over medium heat with the remaining oil until tender. Add vinegar, tomato paste, remaining salt, cumin, cayenne pepper, and 1 cup of water. When it boils, reduce heat to a simmer until cooked through.

In a large serving dish or tray, layer the lentils, rice and macaroni, and sauce. Top with the onions.