01 - Place calamari rings in a bowl, cover with milk and 1 tsp salt. Soak for 10 minutes to tenderize.
02 - In a shallow dish, combine flour, cornmeal (if using), black pepper, paprika, and cayenne pepper.
03 - Heat vegetable oil in a deep pot or large skillet to 350°F.
04 - In a small saucepan, heat olive oil over medium heat. Add minced garlic and sauté for 1 minute. Stir in crushed tomatoes, oregano, red pepper flakes, sugar, salt, and pepper. Simmer for 10 to 15 minutes, stirring occasionally. Add fresh basil if desired.
05 - Drain calamari and pat dry with paper towels. Dredge rings in the flour mixture, coating evenly and shaking off excess.
06 - Fry calamari in batches for 1 to 2 minutes until golden and crispy. Avoid overcrowding the pan. Remove with a slotted spoon and drain on paper towels.
07 - Serve calamari immediately with warm marinara sauce, lemon wedges, and chopped parsley.