Step 1

To make the sauce base, put the onions and olive oil in a stockpot and cook, stirring occasionally, over medium heat until the onions are soft and translucent, about 6-8 minutes. Add the crab shells and the garlic and stir to combine. Use a potato masher to smash the crab shells into small pieces. Cook, stirring often, for 5 minutes.

Step 2

Add the bay leaves, the tops from the fennel bulb, ouzo and a healthy pinch of salt. Add enough water to cover everything by 1 inch. Bring to a simmer and cook for 1 hour. Turn off the heat and pick out as much of the solids as possible, making sure you save the liquid. Strain the liquid through a paper towel set in a colander. Reserve.

Step 3

To finish the sauce, heat the olive oil in a Dutch oven or other large, wide pot over medium-high heat. Saute the onions and chopped fennel until they are soft and translucent, about 6-8 minutes. Add the garlic and cook another minute.

Step 4

Mix in the tomato paste and cook for 3-4 minutes, stirring often, until it darkens and turns the color of brick. Add the ouzo, the tomatoes and 2 cups of the crab sauce base. Stir well and bring to a simmer. Taste for salt and add the Tabasco to taste. Simmer uncovered for 30 minutes, stirring from time to time.

Step 5

Boil your pasta. Once the pasta is ready, add the crabmeat to the sauce and stir gently. Mix the pasta with a little of the sauce, then portion it out. Top with more sauce, and garnish with chives or parsley.