01 -
Wash peppers thoroughly and slice into 1/4-inch thick rings.
02 -
Combine vinegar, sugar, salt, garlic, red pepper flakes, and mustard seeds in a saucepan. Bring to a boil, stirring until sugar and salt dissolve. Simmer for a few minutes.
03 -
Pack pepper rings into sterilized jars, leaving 1/2-inch headspace.
04 -
Pour hot brine over peppers, removing air bubbles.
05 -
Wipe jar rims, seal tightly. Process in a boiling water bath for 10 minutes.
06 -
Remove jars, let cool completely. Store in a cool, dark place for at least a week before enjoying.