Prepare the jalapenos by using a sharp knife to slice the Jalapeños into uniform ⅛ – to ¼-inch rounds. Be sure to wear food-safe gloves to protect your hands from the capsaicin.
1 pound fresh jalapeños
Prepare canning jars in a hot water bath.
In a medium-size pot or dutch oven, bring to a rolling boil, the sugar, apple cider vinegar, garlic powder, celery seed, turmeric, and red pepper flakes.
2 Cups Sugar, ⅔ Cup apple cider vinegar, 1 Teaspoon Garlic Powder, ½ Teaspoon celery seed, ½ Teaspoon ground turmeric, ¼ Teaspoon red pepper flakes
Reduce to a simmer and cook for 5 minutes, until sugar is completely dissolved and the syrup starts to reduce.
Add sliced jalapeños and stir to coat completely.
Bring the mixture back up to a boil, then reduce to a simmer and cook for 10 minutes, stirring every few minutes but then stir continually the final 2 minutes.
Remove the candied peppers from the syrup and place into half-pint jelly jars.
Carefully pour the syrup into jars, cover the peppers and allow to cool. Cover with lid and store in the refrigerator.
To water bath can the peppers, after pouring the syrup over the candied peppers, leave ¼" headspace, wipe the rim, place on a new lid and finger tighten a ring on the jar. Process for 10 minutes in a boiling water bath.