Take your whole pickle and spin it through the spiral cutter. You want long strands of pickles. Take the strands and soak in a bowl with the buttermilk for at least 30 minutes.
In a pot, heat two inches of oil to 375°. While it heats, Stir together the flour, pepper and garlic powder in a shallow bowl. Set aside. Transfer the pickles to a colander and drain off the excess buttermilk.
Grab a handful of the soaked pickles and transfer them to the flour. Stir them around until each one is well coated in the flour and they don't stick together. Shake off excess flour and transfer them to the hot oil. Cook for 5 minutes or until golden brown (times may vary)
Transfer the fried pickle strings to a plate lined with paper towels. Repeat until all the pickle strings are cooked. Top on your burger and enjoy!Notes
I tried a few variations, and you definitely can just skip the buttermilk part and pat dry then add to flour, however I really liked the flavor when I soaked them in buttermilk first!