01 -
Cut the pineapple into bite-size cubes. Slice the jalapeños and finely chop the ginger.
02 -
In a heavy-bottomed pan, combine apple cider vinegar, water, white sugar, black mustard seeds, chili flakes, and salt.
03 -
Bring the pickling liquid to a boil to fully dissolve the sugar.
04 -
Add the sliced jalapeños and pineapple cubes to the boiling liquid.
05 -
Return to a boil, then reduce heat and simmer for 10 minutes.
06 -
Taste and add additional sugar if desired for more sweetness.
07 -
Allow mixture to cool completely to room temperature before transferring to a clean, airtight container.
08 -
Serve immediately or refrigerate for longer storage and enhanced flavor development.