In a 12 to 14-inch saute pan, heat the oil over medium heat until just smoking. Add the onion, garlic, chile peppers, and yellow pepper and cook until soft, about 5 minutes.
Add the calamari and continue cooking until calamari is just tender and cooked through, about 3 minutes. Add mint and season with salt and pepper. Serve immediately.
Recipe courtesy of Mario Batali, 2001