01 -
Chop the pineapple into small pieces, slice the jalapeños, and mince the ginger finely.
02 -
Combine vinegar, water, sugar, mustard seeds, chili flakes, salt, and ginger in a sturdy pot.
03 -
Bring the mixture up to a boil, ensuring the sugar melts completely.
04 -
Toss the pineapple chunks and jalapeño slices into the bubbling liquid.
05 -
Let it boil for a bit, then lower the heat and simmer everything for about 10 minutes.
06 -
Taste and mix in a bit more sugar if you want it sweeter.
07 -
Let it come down to room temperature before moving it into a clean, airtight jar.
08 -
You can eat it right away, but chilling it in the fridge lets the flavors blend better.