Heat oil in a large skillet on medium heat. Add minced garlic and stir to flavor the oil. (do not burn the garlic)
Add the white wine and bring to a simmer. Cook for about one minute to slightly reduce.
Add the jar of pepperoncinis including the liquid and bring to a simmer. Cook for 1-2 minutes more.
Lastly, add all of the Calamari and cook for about 45 seconds- one minute. They cook very quickly so taste for doneness. (overcooking will toughen the calamari.)