Add vinegar, water, salt, peppercorns and sugar to a pot and bring to a boil.
Stir the mixture until both the salt and sugar dissolve.
Once the mixture begins boiling, take the pot off of the stove and let the mixture cool for 5 minutes.
Peel and smash the garlic cloves and slice the banana peppers into rings.
Add the smashed and peeled garlic cloves, banana pepper slices, and a few sprigs of dill into a clean glass jar.
Pour the liquid into the jar until everything is submerged and screw on the lid. Let the jar sit on the counter until it is completely cool, then refrigerate overnight and enjoy the next day!