For the most delicate lasagna, use '00' flour, which is finely ground and produces a silky-smooth dough. Don't overcook the pasta during the initial boiling. It should be slightly underdone as it will continue to cook in the oven. Feel free to experiment with different cheeses in the ricotta filling. A little Pecorino Romano or Fontina would add a lovely depth of flavor. If you don't have fresh basil, you can use dried basil, but be sure to use less as dried herbs are more potent. The resting period for the dough is crucial for gluten development, resulting in a more tender pasta. Make sure to let the lasagna rest after baking to allow the cheese to set and the flavors to meld.