Begin by peeling and smashing garlic cloves, ensuring that they stay intact but are open still.
Slice the shallot into thick ¼ inch slices.
To a nonstick pan, add olive oil over medium heat.
Add the smashed garlic and sliced shallots.
Let these aromatics sit in the oil for a few minutes, until the bottoms begin to brown.
Meanwhile, bring a pot of salted water to a boil and cook the pasta to al dente, according to package instructions.
Reserve about ¼ cup pasta water.
Once the garlic and shallots have browned, remove them from the oil and discard or save for another use.
To the same oil, add tomato paste.
Use a wooden spoon or spatula to stir and cook the tomato paste for a 1-2 minutes. It should slightly darken in color.
Add the calabrian chili paste and stir.
**If you want to use vodka, add about 1-2 tbsps here and let it reduce before adding the cream.**
Add the heavy cream and use a whisk to combine.
Heat until just slightly bubbling.
Add the cooked and drained pasta to the sauce along with cold butter and fresh grated parmesan.
Stir to combine and continue stirring until the butter has fully emulsified into the sauce.
Add pasta water if necessary to thin the sauce, toss to combine, season with salt and pepper.
Serve hot and garnish with more parmesan.