For the garganelli:

1. Add the flours and salt together. Pour out onto a board and make a well in the center. Break the eggs into the well and, using a fork, whisk the eggs together. Using the fork, begin to draw in the flour from the edges. Switch to your hands when you have a wet paste. Continue to combine in the flour until you have dough the consistency of “play dough”. Add more flour if needed. The dough should not stick to the board. Kneed for about 10 minutes. Wrap in plastic wrap and let rest at room temperature for 20 minutes.
2. Divide the dough into 4 equal parts. Roll out the dough to #4 on your Kitchenaid stand mixer with the pasta sheet attachment. Roll one strip at a time. Flour both sides of the dough sheet well and cut into 1 ½-inch squares.
3. Using a butter board and thick skewer or clean pencil, place the square on the butter board in a diamond position. Place the skewer at the base of the diamond and roll the dough away from you, pressing gently to get the ridge pattern in the dough. Once you have the pasta wrapped once around the skewer, use the skewer like a rolling pin to complete the rollup of the dough. Make sure the end is sealed.
4. Place the pasta on sheet pans and use immediately or freeze.

For the pasta sauce:

1. In a skillet large enough to hold the cooked pasta, add the diced pancetta over medium-low heat and allow it to render the fat slowly, stirring occasionally. Cook the pancetta very slowly or you’ll just seal in the fat; it should take about 10 minutes.
2. Add the butter and olive oil. Add the chopped onion and fennel; season with salt and pepper. Cook until both the onion and fennel are soft and translucent.
3. Cut the sausage out of its casings and crumble it into the skillet. Add the crushed fennel seed. Using a wooden spoon, cook the sausage, breaking it up along the way. Cook until all the pink is gone in the sausage.
4. Dissolve the tomato paste in the chicken broth and add to the skillet. Raise the heat until the mixture is bubbling and then reduce to low. Season with salt and pepper to taste and cover and simmer on low for about 1 hour.
5. Season a final time with salt and pepper as needed.

Prepare the pasta:

1. Bring a pot of salted water to a boil.
2. With the pasta sauce simmering over low heat, add the ricotta and parsley and mix in, dissolving the ricotta. The sauce should be pretty “tight” at this point – that is, not too watery. If needed, simmer a little longer to dry it out.
3. Drop the pasta into the boiling water. Once the pasta rises to the surface, cook for one minute.
4. Drain the pasta but retain a cup or so of the pasta water. Add the pasta to the sauce, add some pasta water and stir to incorporate. The sauce should become like a thick salad dressing. Cook for 30 seconds, stirring gently. Add more pasta water as needed.
5. Stir in the Parmigiano-Reggiano cheese and serve.