Watermelon Pickle

Watermelon pickle is the Southern canning jar that proves good cooks waste nothing. Those thick white rinds you normally toss after the red flesh is gone become sweet-spiced, crystalline preserves that pair beautifully with cold cuts, cheese plates, or straight off a spoon. This is a true heirloom recipe that requires nothing more than patience and a little pickling lime.

The pickling lime (calcium hydroxide) step is what separates a great watermelon pickle from a mushy one. Soaking the cubed rind in lime water for an hour firms up the cell structure, giving the finished pickles their signature snap that holds up through the long simmer. Rinsing thoroughly is essential; residual lime will taste soapy and can be unsafe in large amounts.

Whole cloves and allspice tied in cheesecloth infuse the syrup without leaving gritty bits in the jars. Two hours of gentle simmer turns opaque white rind into nearly translucent, jewel-like cubes saturated with warm spice. Proper canning with hot sterile jars and boiling syrup seals them shelf-stable for a year.

Pro Tips

• Choose thick-rinded watermelons (the old-fashioned varieties work best). Seedless watermelons often have thin, hard-to-work-with rinds.
• Scrape off every bit of pink pulp. Leftover flesh ferments in the jar and can spoil the batch.
• Sterilize jars properly using the boiling water method for 10 minutes before filling.
• Skip the green food coloring if you prefer a natural look. Traditional pickles are pale gold to amber.

Variations

• Add a cinnamon stick, star anise, or fresh ginger slices to the spice bag.
• Swap white vinegar for apple cider vinegar for a fruitier, more complex pickle.
• Use lemon juice and zest instead of some of the vinegar for a brighter, less sharp finish.