Pickling lime substitutes
Pickling lime substitutes — 5 options, ranked, with the exact amount
Also called calcium hydroxide, slaked lime, hydrated lime, cal
Use Calcium chloride (pickle crisp)
¼ tsp for every quart jar
For crisp pickles, skip the lime soak and add calcium chloride (sold as Pickle Crisp) straight to each jar: 1/8 tsp per pint or ¼ tsp per quart. It firms the same way, needs no soaking or rinsing, and does not change the acidity, so the rest of a tested recipe stays exactly as written. With nothing to buy, soak the cucumbers in ice water for 4 to 5 hours and trim the blossom ends. For tortillas or hominy, pickling lime is cal itself and the other options here do not replace it.
- Verdict —
- Tweak it
- The tweak —
- Leave out the lime soak and its rinses. Add 1/8 tsp to each pint jar or ¼ tsp to each quart jar on top of the packed vegetables, before the lid goes on.
- Best for —
- quick-process cucumber pickles
Updated 8 Oct 2026 · no sponsored swaps
But first: what’s the pickling lime doing?
Pick your caseIs the lime for crisp pickles, or for treating corn?
Leave out the lime soak and add calcium chloride to the jars, 1/8 tsp per pint or ¼ tsp per quart. Keep the vinegar, water and salt amounts and the processing time exactly as the tested recipe gives them.
Notes on calcium chloride (pickle crisp) or ice water soak + trimmed blossom ends
¼ tsp per quart jar
Trim the blossom ends and soak in ice water first. A grape leaf in the crock is the traditional extra. Keep the salt and water amounts as the recipe states.
Notes on ice water soak + trimmed blossom ends or grape leaves
The soak is there only for texture, so leaving it out does not make the pickle less acidic. Use an ice water soak instead, add calcium chloride to the jars, and expect a firm pickle that is a little less brittle. Check the brine and processing against a current tested recipe.
Notes on ice water soak + trimmed blossom ends or calcium chloride (pickle crisp)
Food-grade pickling lime and cal are the same thing, so either works for cooking dried corn. Without it, start from masa harina or canned hominy, where the lime step is already done.
Notes on masa harina
Pickling lime does one of two jobs. In pickling, vegetables soak in lime water for 12 to 24 hours before they are pickled, and the calcium binds with the pectin in their cell walls so they stay hard and crisp through processing. Because lime is strongly alkaline, any left on the vegetables lowers the acidity of the finished pickle, which is why it has to be rinsed and soaked out completely. In corn cookery the alkalinity is the point: it loosens the hulls and changes the corn so it can be ground into masa.
Every option, one card
Ranked| # | Substitute | Instead of pickling lime | Verdict |
|---|---|---|---|
| 1 | Calcium chloride (pickle crisp)quick-process cucumber pickles | ¼ tsp per quart jarTweak it | Tweak it |
| 2 | Ice water soak + trimmed blossom endscucumber pickles of any kind | See notesTweak it | Tweak it |
| 3 | Low-temperature pasteurizationcucumber pickles whose tested recipe allows it | See notesTweak it | Tweak it |
| 4 | Grape leavesfermented dill pickles | 1 leaf per quart jarYou'll taste it | You'll taste it |
| 5 | Masa harinacorn tortillas | See notesTweak it | Tweak it |
| Not a swap | Alum | not a swapNot for this | Not for this |
| Not a swap | Garden lime or builder's lime | not a swapNot for this | Not for this |
Calcium chloride (pickle crisp)
same; bitter if overused
Food-grade calcium chloride granules, sold with canning supplies. It supplies the same firming calcium as lime without the soak.
- Best for
- quick-process cucumber pickles, pickled peppers, any tested pickle recipe
- Texture
- firm, slightly less glassy than a lime soak
- Prep
- Leave out the lime soak and its rinses. Add 1/8 tsp to each pint jar or ¼ tsp to each quart jar on top of the packed vegetables, before the lid goes on.
Follow the amount on the package you have. It is not alkaline, so it does not lower the acidity of the brine and nothing has to be rinsed out. More is not crisper: too much tastes salty and bitter. It will not rescue cucumbers that were already soft.
Ice water soak + trimmed blossom ends
same
The no-additive method in current home-canning guidance: cold-crisp the cucumbers and cut off the end that carries the softening enzymes.
- Best for
- cucumber pickles of any kind, fermented dill pickles
- Texture
- firm, less brittle
- Prep
- Cut a 1/16-inch slice off the blossom end of each cucumber, then soak the cucumbers in ice water for 4 to 5 hours before pickling.
- Pantry
- Likely in your cupboard
Works best on small pickling cucumbers used within 24 hours of picking. The result is firm, not as hard and glassy as a lime-soaked pickle. Waxed slicing cucumbers stay soft whatever you do.
Low-temperature pasteurization
same
A processing method, not an ingredient: holding the filled jars at a lower temperature for longer keeps more of the crunch than a boiling-water bath.
- Best for
- cucumber pickles whose tested recipe allows it
- Texture
- firmer than boiling-water processing
- Prep
- Place jars in a canner half-filled with warm water (120°F to 140°F), add hot water to 1 inch above the lids, and hold the water at 180°F to 185°F for 30 minutes, checking with a thermometer.
- Pantry
- Likely in your cupboard
Use it only when the tested recipe says it may be used. Below 180°F the pickles are not safely processed; above 185°F they soften. It needs a thermometer and attention for the full 30 minutes.
Grape leaves
faintly tannic
The traditional crisping leaf. Its tannins inhibit the enzymes that soften a pickle.
- Best for
- fermented dill pickles, crock pickles
- Texture
- a little firmer than nothing
- Prep
- Rinse a fresh, unsprayed leaf and lay it in the bottom of the jar or crock.
- Pantry
- Special trip
A milder effect than calcium. Home-canning guidance notes that trimming the blossom ends makes the leaves unnecessary, since both deal with the same enzymes. Oak and horseradish leaves are used the same way.
Masa harina
milder than fresh masa
For tortillas and tamales only: flour made from corn that has already been cooked in lime, so the lime step is done for you.
- Best for
- corn tortillas, tamales
- Texture
- finer, a little drier
- Prep
- Skip cooking dried corn with lime. Mix the masa harina with warm water as its package directs.
It replaces the whole process, not the powder. It will not make hominy from dried corn; for that, buy canned hominy or food-grade cal.
Alum
bitter, astringent if overused
The old-fashioned firming powder that many inherited recipes still list.
- Best for
- nothing here
- Texture
- no gain in quick pickles
Current USDA home-canning guidance no longer recommends it. It does not improve the firmness of quick-process pickles, and it is unnecessary when the cucumbers are fresh and the recipe is a tested one. Leave it out; the recipe is safe without it.
Garden lime or builder's lime
not safe to eat
Agricultural lime, hydrated lime from a hardware store and quicklime share the name and are not food.
- Best for
- nothing here
These are not food grade and can carry contaminants. Quicklime is caustic and heats violently in water. Only powder labeled pickling lime, food-grade calcium hydroxide or cal for cooking belongs near food. Lime juice is also no substitute: it is an acid from a fruit and firms nothing.
Don’t swap it here
3 cases- SafetyYou do use pickling lime and want to shorten or skip the rinsing.Drain the lime water, rinse, then soak in fresh water for 1 hour. Repeat the rinse and the 1-hour soak two more times before pickling.
- SafetyChanging the vinegar, water, salt or processing time of a tested canning recipe to make room for a crisping agent.Change only the firming step. Follow the tested recipe for everything else.
- Cooking dried corn for masa or hominy with calcium chloride, alum or baking powder.Buy food-grade cal or pickling lime, or start from masa harina or canned hominy.
Questions
6 questionsWhat can I substitute for pickling lime?
For crisp pickles, use calcium chloride, sold as Pickle Crisp: 1/8 tsp per pint jar or ¼ tsp per quart, added to the jar with no soaking and no rinsing. Without it, trim the blossom ends and soak the cucumbers in ice water for 4 to 5 hours. Leave the rest of the tested recipe unchanged.
Can I use alum instead of pickling lime?
It is no longer recommended. USDA home-canning guidance says alum does not improve the firmness of quick-process pickles and is unnecessary with fresh produce and a tested recipe. Leave it out rather than swapping it in.
Is pickling lime safe?
Food-grade lime can be used to soak cucumbers for 12 to 24 hours before pickling, but all of it has to come out. Drain, rinse, and soak in fresh water for 1 hour, then repeat the rinse and soak two more times. Lime left behind lowers the acidity of the pickle, and acidity is what makes it safe to can.
Is pickling lime the same as cal for tortillas?
Yes. Both are food-grade calcium hydroxide. Pickling lime from the canning aisle can be used to cook dried corn for masa, and cal from a Mexican grocery can be used for a lime soak. Lime from a garden center or hardware store is not food grade and is not the same.
Can I just leave pickling lime out?
Yes. The lime soak only affects texture, so skipping it does not make a tested recipe less safe. The pickles will be less hard. Use fresh small cucumbers, trim the blossom ends, soak in ice water, and add calcium chloride if you have it.
Is pickling lime the same as lime juice?
No. Pickling lime is a mineral powder, calcium hydroxide, and is strongly alkaline. Lime juice is an acid from a citrus fruit. They share a word and nothing else.
Tips for substituting pickling lime
5 tips- Cut 1/16 inch off the blossom end of every cucumber, the end opposite the stem. That slice holds the enzymes that soften pickles.
- Pickle cucumbers within 24 hours of picking. Nothing added to the jar firms a cucumber that has already gone limp.
- Measure calcium chloride with a 1/8 tsp measure. It is used in very small amounts and too much turns the brine bitter.
- If you soak in lime, use a glass, stainless steel or food-grade plastic container. Lime reacts with aluminum.
- For low-temperature pasteurization, clip a thermometer to the pot and keep the water between 180°F and 185°F for the full 30 minutes.