Start by cutting the stalks of leek into thin round slices then transfer them to a bowl, add the sparkling water and the mineral water, mix well, drain all the water.
Transfer all the leek to a large bowl, add one pinch of salt, mix and set aside.
In a bowl, add the eggs, the salt, the sweet paprika, the chili flakes and the dried basil, mix well until combined. Add the baking powder, mix gently and set aside.
Now, to the bowl with the leek, add the wheat flour, the cornmeal and the egg mixture we made, mix very well until combined.
Once you’ve done that, in a skillet, add the unsalted butter, stir until melted.
Pour in the leek mixture, spread it well, cover the skillet and let it fry for 5 minutes.
After this indicated time, flip it, top it with the grated mozzarella cheese, cover the skillet again and let it fry for another 3 minutes.
Finally, top it with chopped parsley to taste.
Serve.