In a blender add 2 egg yolks, blend. While the motor is running, slowly add 8 ounces olive oil. Season with salt and pepper.
Add the white wine vinegar, and capers. Pulse quickly. Transfer the mayonnaise to a mixing bowl and add 1 mashed, tuna.
Mix together and transfer to a mixing bowl. Refrigerate until needed.
In a large pot heat oil to 350 degrees. Next, mix together flour, salt and cayenne pepper. Coat the calamari rings in the flour and fry until golden brown, about 30 seconds. Drain on paper towels. Serve hot with the caper mayonnaise.
Consumption of raw or undercooked eggs, shellfish and meat may increase the risk of foodborne illness.