Put on gloves before handling the jalapeños and keep your hands away from your face and eyes while you work. The pepper oils cling to skin easily, and this small step saves you from a very memorable mistake.

Rinse the jalapeños, cut off the stem ends, and if you want a milder batch, core or partially core them to remove some of the membrane and seeds. Leaving more of the inside intact gives you the classic heat, while removing some tones it down without changing the sweet-tangy balance.

Slice the peppers into 1/4 inch rounds. Even slices cook at the same pace and give the jars a better texture from top to bottom.

Combine the apple cider vinegar, white sugar, brown sugar, garlic powder, turmeric powder, mustard seeds, sea salt or pickling salt, ground ginger powder, and optional chili flakes in a large non-reactive pot over medium high heat and simmer for about 5 minutes, stirring regularly. Watch the pot closely because the syrup foams and rises as the sugars melt and the spices bloom.

Add the sliced jalapeños, bring the pot to a boil, then lower the heat and simmer for 5 minutes, stirring now and then. The peppers will deepen to a darker green and look a little shriveled, which is exactly what you want at this stage.

Lift the jalapeño rings out with a slotted spoon or tongs and pack them lightly into clean jars, leaving the syrup in the pot and at least 1/2 inch of headspace in each jar. Do not cram them in tightly or the syrup won’t move around them as evenly.

Bring the syrup back to a boil, then simmer it for about 8 to 10 minutes to reduce. It should look glossier and slightly thicker, and a little on a cold spoon should coat the surface instead of running off like water.

Ladle the hot syrup over the peppers, leaving 1/2 inch to 1/4 inch of headroom in each jar. The slices should be fully surrounded by syrup, with enough space left for proper storage or canning.

Cool the jars if you’re refrigerating them, or move straight to the canning step if you’re processing them for shelf storage. The aroma will be sweet and sharp, and the peppers will continue absorbing flavor as they sit.

Wait at least one week before eating if you use the refrigerator method, or at least 3 to 4 weeks after canning for the fullest flavor. Freshly made cowboy candy is good, but a little time in the jar makes the heat, sugar, and vinegar taste more balanced.

To water bath can, remove air bubbles, wipe the rims with a damp paper towel, center fresh lids, add the rings fingertip-tight, and process the jars in boiling water covered by 1 to 2 inches of water for 10 minutes for half pints or 15 minutes for pints, adjusting for altitude. When the jars cool, the lids should look flat and sealed before you store them in a cool dark place.