Boil the pasta in a pot with 2 tablespoons olive oil and a pinch of salt. Cover the onion with white flour and Saute the onions for a crisp taste. Leave the oil on the side
Add 2 tablespoons of the oil to a pot then add the rice with salt and leave until fully cooked
When boiling the pasta add 2 tablespoons of the oil (use the same oil you used for frying the onions)
To prepare the sauce: Add a tablesppon of the onion's oil, minced garlic, 2 tablespoons of the vinegar, hot sauce, tomato sauce, a cup of water, salt. Take half of the mixture and add hot sauce and water (leave the other half). This will be used for the sauce
Use the other half of the mixture, on a skillet saute the garlic , add vinegar, water, hot sauce, salt, cumin, coriander.
When serving the koshari; add a layer of pennettine rigati and spaghetti then a layer of rice, atop that with lentils then onion. Serve both sauces on the side