* ingredients :°1 kg of potatoes°500 grams minced meat°1 onion°4 garlic cloves°4 tsp chop parsley°4 tsp chop coriander°3 tsp olive oil°150g grated Gruyere°salt pepper°Spice your choice (I putting split pepper, cumin also paprika)°Fresh Sauce* Ingredients:°1 L milk°100 g flour°100 gm butter°1 teaspoon salt°pepper pinch°pinch of nutmeg* Preparation :Prepare the bechamel sauce:In a large saucepan, put the butter and cut into very small pieces, the flour, salt, pepper, and nutmeg.Cool, pour in milk, stir with a whiskOnce almost mixed, heat and do not stop stirring with a wooden spoon until fully cooked (eg when spoon is covered with sauce, about 10/15 minutes.+Prepare gratin:In skillet on low heat, heat onion, ground beef, parsley, cilantro, garlic also spices in 2 tsp olive oil.Reserving after 11 min of cookPeeled potatoes, cutting them to slice, & cooking about 15 min in saucepan of salted water & drain.Putting layer potatoes in casserole & covering with half of fresh sauce. .Adding mince meat, & other half of fresh sauce.Cover the remaining potatoes, sprinkle with grated cheese and bake in a preheated oven at 180 ° C for 20 minutes, until the gratin is golden.Submit it right away.Enjoy !