Cook the pasta
Boil shells in salted water until al dente. Reserve ¼ cup pasta water and drain.
Sauté aromatics
Heat olive oil over medium heat.
Add shallots → cook 2–3 min until soft.
Bloom the chiles
Add Calabrian chiles → cook 1–2 min to release oils and deepen flavor.
Add garlic
Stir in minced garlic → cook 30 seconds until fragrant, careful not to burn.
Add tomato paste
Stir and cook 1–2 min, letting it lightly brown for rich, umami flavor.
Deglaze with vodka
Pour in vodka → simmer 2–3 min to cook off alcohol.
Add cream & Parmesan
Lower heat → stir in heavy cream.
Add ¼ cup Parmesan → stir until melted and sauce is silky.
If sauce is too thick, loosen with a bit of reserved pasta water.
Combine with shells
Toss cooked pasta shells in sauce → coat every curve.
Finish & serve
