How to Make Lacto-Fermented Dill Pickles in Canada

Lacto-fermented dill pickles are the original dill pickle — predating canning, predating vinegar production, going back thousands of years. They’re tangier and more complex than vinegar pickles, contain live probiotic bacteria, and use exactly two ingredients beyond flavourings: cucumber and salt.

This guide covers the traditional fermentation method. For shelf-stable water-bath canned dill pickles, see how to make dill pickles.

As an Amazon Associate we earn from qualifying purchases. Some links on this site are affiliate links — they cost you nothing extra and help fund our testing kitchen. Affiliate disclosure.

What you need

For 1 × 2 L wide-mouth Mason jar (about 1.5 kg pickles):

• 1.5 kg small fresh Kirby pickling cucumbers (under 8 cm long, narrow, firm)
• 35 g pickling salt per 1 L of brine (use about 1.5 L total brine for a 2 L jar)
• 1.5 L water (filtered or bottled — chlorine in tap water can inhibit fermentation)
• 4-6 cloves garlic
• 1 large bunch fresh dill (or 2 dill flower heads, traditional)
• 1 tbsp mustard seeds
• 1 tsp black peppercorns
• 2 bay leaves
• Optional but recommended: 1 black tea bag, OR a few fresh grape/oak/horseradish leaves for tannins (keeps pickles crisp)
• 2 L wide-mouth Mason jar or fermenting crock
• Fermentation weight (glass weight, smaller jar of water, or sealed brine-filled bag)
• Airlock lid or loose-fitting regular lid

Method

Step 1: Prep cucumbers

1. Wash cucumbers under cool running water. Scrub gently with a vegetable brush.
2. Trim 1-2 mm off the blossom end of every cucumber. This is critical — blossom-end enzymes soften pickles. See why pickles go soft for the detailed explanation.
3. Leave the stem end intact or trim it too — doesn’t matter for safety.
4. Soak cucumbers in ice water for 1-2 hours before packing. This firms them up and improves crunch.

Step 2: Make the brine

1. In a large pot, combine 1.5 L water + 52 g pickling salt (3.5% concentration; about 3 tbsp salt).
2. Heat gently, stirring until salt completely dissolves.
3. Cool to room temperature before using. Hot brine kills lactobacillus bacteria.

Step 3: Pack the jar

1. Drain the cucumbers.
2. Place flavourings at the bottom of the 2 L jar: garlic cloves, mustard seeds, peppercorns, bay leaves, half the dill, and your tannin source (tea bag or 1-2 grape/oak leaves).
3. Pack cucumbers vertically as densely as you can. Squeeze them in. Lacto-fermenting cucumbers expand only slightly.
4. Place remaining dill on top of cucumbers.
5. Pour cool brine over to cover cucumbers completely, leaving 3-4 cm headspace.
6. Place a fermentation weight on top of the cucumbers to keep everything submerged below the brine. No exposed cucumber surfaces — that’s where mould grows.
7. Apply the airlock lid (or a regular lid loosened ¼ turn).

Step 4: Ferment

1. Set the jar on a plate to catch overflow.
2. Place at 18-22°C out of direct sunlight.
3. First 24-48 hours: minor bubbling begins.
4. Day 3-5: active fermentation, brine becomes cloudy, bubbles rise visibly. Taste daily.
5. Day 5-7: pickle-tasting, sour, pleasant.
6. Day 7-14: increasingly sour, more complex.

Refrigerate when they taste how you like them.

Step 5: Refrigerate

Lacto pickles continue to ferment slowly in the fridge. They’re at their crisp-and-tangy peak about 1-2 weeks after refrigerating.

Storage

• Refrigerator at 1-4°C: 6-12 months
• Best texture: weeks 2-12 after refrigeration
• Best for serving raw: months 1-4
• After 6 months: still safe, more sour, softer texture; good for chopping into salads or relish
• Don’t store at room temperature after fermentation — they over-ferment fast

Variations

Half-sour (3-day) pickles

Eat after just 3 days of fermentation. Still firm, mildly sour, “half-cured” style. Famous New York-Jewish style. Refrigerate immediately; consume within 2 weeks.

Spicy lacto pickles

Add 2-3 small dried chili peppers OR 1 sliced fresh jalapeño to the jar.

Garlic-heavy

Use 8-10 garlic cloves instead of 4-6. Garlic mellows during fermentation; the result is intensely garlicky and excellent.

Whole-cloves of garlic for snacking

Add extra garlic — the fermented garlic cloves themselves become a delicacy. Pop them out of the brine and eat with cheese or crackers.

Lacto-fermented sliced pickle chips

Slice cucumbers into 5 mm chips before packing. Faster fermentation (3-5 days). Less crunchy than whole pickles.

Lacto pickles with onion and pepper

Pack thinly sliced onion rings and 1 sliced red bell pepper between layers of cucumber. The onions and pepper pickle alongside.

Asian-style lacto pickles

Substitute white vinegar-free Asian flavours: 2 tbsp sliced fresh ginger, 1 star anise, 1 tbsp Sichuan peppercorns. Same brine, different jar character.

How to use lacto pickles

• On sandwiches — Reubens, deli sandwiches, grilled cheese, burgers
• Side dish with steak, roast, or grilled meats
• Chopped into potato salad — adds crunch and tang
• In tuna or chicken salad — replaces vinegar-pickle relish
• In a charcuterie board — alongside cheese and cured meat
• Pickle juice for marinades — the live brine is a fantastic chicken or pork marinade
• Pickle backs — sip alongside whiskey shots (very Canadian-Polish thing)
• Straight from the jar — the prairie-grandmother snacking tradition

Lacto pickles vs vinegar pickles — when to use each

	Lacto pickles	Vinegar pickles
Acid source	Lactic acid (bacterial)	Acetic acid (vinegar)
Flavour	Tangy, complex, funky	Sharp, vinegary, clean
Texture	Slightly soft	Firmer (with Pickle Crisp)
Live probiotics	Yes	No (heat-processed kills them)
Storage	Refrigerator 6-12 months	Pantry shelf 12+ months
Method difficulty	Lower	Moderate
Equipment	Jar + weight	Canner + jars + lids
Salt level	3.5% brine	5-7% brine in finished pickle

Most Canadian home fermenters make both — vinegar pickles by the case for shelf storage, lacto pickles for fresh probiotic eating.

Common problems

• White film on brine. Kahm yeast — harmless, just skim off. Cucumbers underneath are fine. Keep them submerged.
• Fuzzy or coloured mould. Discard the batch. Rarely happens with submerged cucumbers.
• Cucumbers turned hollow. Variety or post-harvest dehydration issue — not a fermentation problem. The hollow ones are safe; just less satisfying.
• Pickles are slimy/mushy. Cucumbers were too old, blossom ends not trimmed, or fermentation too warm. Tannin source (tea, grape leaf) helps. Use fresher cucumbers.
• Pickles too salty. Brine concentration was too high. Stick to 3.5% — measure salt by weight.
• Pickles not sour after 10 days. Temperature too cold, or chlorinated water inhibited bacteria. Move to warmer spot; use filtered water next batch.
• Brine cloudy. Completely normal for lacto pickles — cloudy brine = active lactobacillus.
• Garlic turned blue or green. Harmless reaction between garlic enzymes and acid. Looks weird, tastes fine.
• Cucumbers floating above brine line. Use a heavier fermentation weight; top up with more 3.5% brine.

Why the 3.5% salt rule matters

Below 2%: spoilage bacteria outcompete lactobacillus → rotten pickles. Between 2-3%: borderline; some batches go off. Between 3-4%: ideal for cucumbers (the sweet spot). Above 4%: too salty; lactobacillus struggle; fermentation slow or fails.

This rule is specific to cucumbers. Cabbage (sauerkraut) ferments at 2% because the dry-salting method works differently and cabbage has less water content. Don’t substitute kraut salt levels for pickle brine.

Yield expectations

• 1.5 kg cucumbers → 1 × 2 L jar of lacto pickles (about 1.2 kg pickled cucumbers + brine)
• Each jar provides 50-80 pickles depending on size
• A typical Canadian fermenting household makes 2-4 jars per summer for fall/winter eating

Why lacto pickles are worth it

• Easiest fermentation project after sauerkraut — fewer variables than kimchi
• Live probiotic food — beneficial bacteria intact
• Use surplus cucumbers — when the garden over-produces, lacto-ferment instead of giving away
• Better texture than vinegar pickles for some uses — sandwiches especially
• Heritage food — Eastern European, Jewish, German Canadian traditions all use this method

Next steps

• How to make dill pickles in Canada (vinegar method) — shelf-stable companion
• How to make sauerkraut in Canada — the cabbage version
• How to make kimchi in Canada — Korean fermentation
• Best fermenting crock in Canada — equipment guide
• Why pickles go soft — the texture troubleshooting
• Fermenting & root cellaring pillar — broader method