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["Let's begin with the pasta recipe: Sift the flour into a large bowl, then arrange it to form something similar to a volcano", "Break the eggs (4) in the middle of it and whisk them together with salt and olive oil using a fork", "Slowly fold the eggs into the flour, using your hands", "Keep kneading the dough (vigorous movements using your palms!)", "for at least 10 minutes", "Form dough into a ball, cover with a rag and let it rest for 30 minutes", "Now, the filling: Cut leek into slices and sear it in a pan with butter", "Stew potatoes, peel and mash them", "Add parmesan, eggs (2), leek, salt and pepper to the mashed potatoes: stir until homogenous", "Let the filling rest for 60 minutes in the fridge", "Let's begin making ravioli!", "Cover in flour a flat surface and roll out the dough to form a very thin rectangle (2mm or 1/12""), you can use a pasta machine if you have it", "Along the longer side of the rectangle, on the upper part of it, put a teaspoon of filling every 4cm or 2""