Preserved lemons in their own juice

What preserved lemons are

Preserved lemons are whole or cut lemons packed with salt and left under their own juice until the rind softens. The peel becomes mellow and fragrant; the pulp remains salty and sharply sour. In North African cooking, the rind is commonly minced into stews, tagines and dressings.

The James Beard Foundation describes preserved lemons as a North African seasoning used especially in Moroccan and Tunisian food. Its published formula is a modern recipe version; the regional association is not a claim that this exact formula began in one place.

The James Beard Foundation formula

The Foundation's published version measures 8 to 10 lemons, 1/3 cup kosher salt and about 1/2 cup juice from four lemons. It cuts the remaining fruit into six wedges, coats them with the salt, packs them with their released juice into a sterilized pint jar and adds reserved juice to cover.

The recipe directs a tight cover and about three weeks at room temperature, turning the jar upside down each day, until the lemons soften and begin to ferment. This section records the published directions; it does not establish a controlled fermentation process or validated preservation endpoint.

Salt, juice and change

Salt draws moisture from the cut fruit, while the added lemon juice covers the wedges. The rind softens as salt and acid act on it over time. The James Beard Foundation's text says fermentation may begin, but neither it nor the ingredient list identifies a controlled microbial culture, measured acidity, or other endpoint.

A soft rind or visible change in the jar is not a safety test. This description keeps the source's fermentation wording distinct from a validated fermentation or preservation process.

A separate UC ANR and Ball recipe

UC Agriculture and Natural Resources' January 2025 Master Food Preserver handout gives a different traditional salt-preserved-lemon formula, adapted from the 2020 Ball Complete Book of Home Food Preservation. It uses ten lemons, 1/2 cup pickling salt, and optional bay leaves, cinnamon sticks and peppercorns. Its method calls for two weeks in a dark, cool cupboard with daily shaking, followed by refrigeration.

These are the UC ANR/Ball recipe's own amounts and directions. They do not validate the James Beard Foundation recipe's salt ratio, room-temperature duration, or storage, and the two methods should not be mixed.

Storage and limits

The James Beard Foundation recipe gives no safe storage time after its three-week room-temperature cure. Do not treat a tight lid, juice cover, softening, or the start of fermentation as proof that this exact batch is safe to keep at room temperature. This page does not recommend room-temperature storage after curing and does not assign the formula a shelf life.

The UC ANR/Ball-derived method directs refrigeration after its own two-week cure. That recommendation belongs to that separate recipe. For home preservation, use a current recognized tested recipe as written rather than transferring amounts or storage directions between versions.

Mould or leakage is a reason not to use the jar, but the absence of visible spoilage cannot establish safety.