Why blend the sauce?
Blending creates a silky, cohesive texture that lets the Calabrian chilis distribute evenly throughout instead of settling to the bottom.
Can I use fresh chilis instead of Calabrian?
Calabrian chilis have a specific fruity, fermented heat. Fresh red chilis work but will taste different; adjust quantity to your heat preference.
What does the vodka do in this sauce?
Vodka extracts flavors from the tomato paste and chilis that water cannot, intensifying the sauce's depth and adding subtle complexity.
Can I make this ahead?
Yes. Make the sauce up to 2 days ahead, refrigerate, and reheat gently over medium-low heat before tossing with pasta.
How do I adjust the spice level?
Start with 1 tbsp Calabrian chilis; reduce for milder heat or add up to 1.5 tbsp for more kick. Taste as you blend.