Cut the squid tube into rings of 2 cm and let them rest for a few minutes.
Mix the dry ingredients: In a bowl, add the flour, salt, pepper, and chopped parsley, and mix them together. Optional: You can add some smoked paprika for extra flavour.
Add the squid rings into the bowl with the dry ingredients and mix them by hand. Gently try to cover each ring with the flour. Once you are done, place them, if possible separately, on a plate or a sheet.
Pour the oil into a pot and place it on the burner to heat it.
Quick tip: The best way to test your oil is by using a tiny crumb of the dry mixture or the back of a wooden spoon. If it starts steadily bubbling, the oil is ready to fry. If there's no bubbling or it is too low, the oil is not ready yet. It should take you approximately 5 to 10 minutes to have the oil hot enough.
Please, be careful with hot oil, as it is very dangerous!! Once the oil is ready to fry, grab a few rings and place them into the hot oil. It should take 5-8 minutes or until they are golden brown.
Important: Don't overcook them, otherwise, the squid will become tough and rubbery.
Have a plate ready with kitchen towels to absorb any excess oil. Try to have a stainless steel strainer/skimmer/spider or tongs handy to remove the rings once they are cooked. Cut some lemon wedges and squeeze them all over the calamari. You may also add more chopped parsley on top, or red pepper flakes for spiciness. Sprinkle some salt flakes (or just regular salt) on them, and that's it. You are ready to eat!