Wash and dry peppers
Remove stems and seeds
Finely chop peppers
Combine chopped peppers, vinegar, and sugar in a pot
Bring mixture to a boil
Stir in pectin
Boil for the time listed on the pectin package
Skim off foam if needed
Pour hot jelly into sterilized jars
Leave proper headspace
Wipe jar rims
Seal with lids and rings
Process jars in a boiling water bath if required
Let jars cool completely
Check seals
Store in a cool, dark place