Classic Garlic-Dill Fermented Pickles

The deli sour pickle done right: whole or halved cucumbers in a garlicky, dill-heavy 4% equilibrium brine, soured by wild lactic acid bacteria until they snap. No vinegar, no canning — just salt, time, and cold to finish.

Ingredients

Cucumbers are dense and slow to sour, so this recipe runs a higher salt than leafy ferments — 4% equilibrium, in the cucumber crunch band of 3.5–5%. Weigh your real pack and size salt against the vegetable + water total.

Ingredient	1 Jar (~1 L)	1 Crock (~2 L)
Pickling cucumbers (small, firm)	450 g	900 g
Filtered water	550 g	1,100 g
Non-iodized salt (4% of veg + water)	40 g	80 g
Garlic, peeled & smashed	3 cloves	6 cloves
Fresh dill (heads + fronds)	1 large head	2 large heads
Black peppercorns	1 tsp	2 tsp
Yellow mustard seed	1 tsp	2 tsp
Tannin leaf (oak, grape, horseradish, or 1 black-tea bag)	1 leaf	2 leaves
Bay leaf (optional)	1	2

Yield

One quart jar: about 450 g of finished sour pickles plus their brine. The crock makes two jars’ worth.

Calculated values

Value	Target
EQ salt % (of veg + water)	4.0% (band 3.5–5% for cucumbers)
Target finished pH	3.4–3.8
Ferment temp	18–22 °C / 64–72 °F
Day range	7–21 days (faster warm, slower cool)

Salt is (veg_g + water_g) × 4.0 / 100. For the jar: (450 + 550) × 0.04 = 40 g. Check the math and correct for salt purity with the brine salinity calculator.

Readiness window

Bubbling peaks around days 3–7 and slows as the sugars run out. Begin tasting at day 5. A finished sour pickle is tart and garlicky, translucent (not white-cored raw) through to the center, and still crunchy. Cooler rooms can take the full 3 weeks; warm rooms can finish a half-sour in a week.

Done when: a calibrated meter reads pH 3.4–3.8 and the pickle is sour throughout. Arrest by moving the jar to the refrigerator at 2–4 °C, which effectively stops the ferment and locks in crunch.

Method

Source and trim the cucumbers

Use small, very fresh pickling cucumbers (Kirby type) — soft or waxed supermarket cucumbers go mushy. Trim a thin slice off the blossom end of each (the end opposite the stem); it carries the pectinase enzyme that softens pickles. Soak in ice water for an hour if they aren’t garden-fresh.

Pack the jar

Lay the tannin leaf, garlic, dill, peppercorns, mustard seed, and bay at the bottom and tuck cucumbers in tightly, standing them upright. Pack snug so they stay submerged.

Weigh the base and size the salt

Fill with water to ~2 cm headspace, then pour that water into a tared bowl to read it. Record veg + water and multiply by 4% — for ~450 g veg + 550 g water that’s 40 g salt. Run it through the brine salinity calculator; use the fermentation predictor to estimate days at your temperature.

Make the brine and submerge

Dissolve the salt fully in the measured water, then pour it back over the cucumbers until everything is covered. Set a fermentation weight on top so nothing floats above the brine line.

Ferment at 18–22 °C and burp

Cover loosely or fit an airlock, out of direct sun. Burp daily if sealed — pressure builds fast in the first 3–5 days. Cloudy brine and rising bubbles are normal and good.

Finish by pH, then chill

Start tasting at day 5. When sour through the center and still crunchy — usually 7–21 days — confirm pH 3.4–3.8 with a calibrated meter, then refrigerate at 2–4 °C to arrest.

Variations

Spicy dill: add a dried chile or a few red-pepper flakes to the jar.
Extra garlicky: double the garlic and add a pinch of coriander seed.
Spears or chips: cut cucumbers into spears for faster, more even souring (and less core risk), at some cost to maximum crunch.