Step 1

Slice calamari tubes into bite-size pieces. Also, chop any larger tentacles. Soak calamari in buttermilk or yogurt solution along with salt and pepper for at least 30 minutes in the refrigerator.

Step 2

Meanwhile, pulse mini pretzels and flour together in a food processor until pretzels are finely crushed, but still have some texture. Season with black pepper and red pepper flake if using. Place pretzel-flour mixture in a shallow dish.

Step 3

Spray air fryer basket with oil. Preheat air fryer to 360 degrees F. Drain calamari from marinade. Dip calamari into pretzel-flour mixture and roll around until completely coated. Place calamari in air fryer basket and spray or brush with oil. Air fry calamari for 10-12 minutes, turning and brushing or spraying with more oil about halfway through.

Step 4

While calamari cooks, mix together equal parts mustard and mayonnaise in whatever amount desired for dipping.

Step 5

Once calamari is cooked, serve immediately with sauce, lemon slices, and parsley on top.