Bring vinegar to a boil and then stir in sugar and salt until it dissolves.
Add peppercorns and garlic to bottles, if desired.
Pour hot vinegar over peppers.
Close up tightly and let peppers "pickle" for 5-7 days before using pepper sauce.
Notes
This is about enough to make two small bottles of pepper sauce, but can easily be cut in half or doubled, depending on how many fresh peppers are available.