Pickled Bread-And-Butter Zucchini

When the zucchini plant produces faster than you can eat it, this is the canning recipe to fall back on. Sixteen cups of sliced zucchini and four cups of thinly sliced onion get the classic bread-and-butter pickle treatment: a brine of vinegar, sugar, mustard seed, celery seed, and turmeric that’s been turning farm-stand vegetables into year-round pantry staples for over a century.

Zucchini takes to the bread-and-butter brine almost identically to cucumber, but with a slightly softer, more melting texture. The skin holds shape better than the flesh, so you get a pickle that’s tender but not mushy.

The salt soak before brining is the step most home picklers skip and shouldn’t. Two hours under salted water draws excess moisture from the zucchini, firming the slices and concentrating flavor. Without it, the finished pickles are watery and bland.

Turmeric does double duty: it tints the brine that signature golden yellow and contributes earthy depth alongside the mustard and celery seeds. Process the jars in a boiling water bath for safe long-term storage. Properly sealed, these keep for a year and only get better as the flavors marry.

Pro Tips

• Use small to medium zucchini, no bigger than a regular cucumber. Larger squash have soft, watery seeds that fall apart during canning.
• Slice with a mandoline for even thickness. Inconsistent slices make some bites mushy and others crisp.
• Use pickling salt, not table salt. Iodine and anti-caking agents in table salt cloud the brine and discolor the pickles.
• Wait at least 2 weeks before opening a jar. The flavors deepen and integrate over time, with peak flavor around 4 to 6 weeks.

Variations

• Add 1 sliced red bell pepper to the mix for color and a hint of sweetness.
• Stir in 1 tablespoon of red pepper flakes for a spicy bread-and-butter version.
• Substitute 1 cup of apple cider vinegar for 1 cup of the white vinegar for a deeper, fruity flavor.