The Cook's Book

Foundations

Preserved Lemons

Salt-cured lemons for tagines, dressings and stews

Makes
one 1 l (1 quart) jar
Hands-on
Total
Level
Easy

Lemons packed in salt and their own juice soften over a month into something silky, intensely lemony and slightly floral. The rind, finely chopped, brings a depth that fresh lemon can't, especially in tagines, grain salads and dressings.

Ingredients

  • 6unwaxed lemonsabout 800 g, scrubbed; plus 3–4 more for juice
  • 150 gcoarse or fine sea salt (½ cup)
  • 2bay leavesoptional
  • 1 tspcoriander seedsoptional
  • 250 mllemon juice (1 cup)from the extra lemons, as needed
Diet
Vegan, Vegetarian, Gluten-free, Dairy-free
Allergens
None of the EU 14
Origin
North Africa (Morocco)

Method

  1. Sterilize a 1 l glass jar by washing it in hot soapy water, rinsing, and drying it in a 120°C (250°F) oven for 15 minutes. Let it cool.
  2. Trim the ends off each lemon. Cut each lemon into quarters from the top, stopping 1 cm from the base so they hold together.
  3. Open each lemon over a bowl and pack about 1 heaped tablespoon of salt inside.
  4. Sprinkle 2 tbsp salt in the jar. Pack in the lemons one at a time, pressing hard so they release their juice, and scattering more salt, the bay leaves and coriander seeds between them.
  5. Pour in fresh lemon juice until the lemons are completely submerged. Top with any remaining salt and close the lid.
  6. Leave at cool room temperature for 3 days, shaking or turning the jar once a day. Press the lemons down if they rise above the juice.
  7. Move the jar to the fridge and leave for at least 4 weeks before using, until the rind is soft and translucent.
  8. To use, take out a piece, rinse it, scrape away the pulp if you want a milder taste, and finely chop the rind.

Why it works

High salt concentration draws juice from the lemons and creates a brine that blocks spoilage microbes, while the lemon's own acid helps preserve them further. Over weeks, enzymes and the salt break down the bitter white pith, so the whole rind becomes tender and edible. The flavor changes too: sharper notes fade and a rounder, almost floral lemon character develops.

Common mistakes

  • Leaving lemons exposed above the brine: they can grow mold. Keep them submerged; top up with lemon juice.
  • Using waxed lemons: the wax stops the salt from penetrating. Scrub well or buy unwaxed.

Variations

Quick preserved lemons
Slice 2 lemons thinly, toss with 2 tbsp salt and 1 tbsp sugar, cover with lemon juice and refrigerate; usable after 1 week.

Make ahead and storage

Keeps up to 1 year in the fridge, always submerged.

Notes

Use in Vegetable and Chickpea Tagine, with roast chicken or in Tabbouleh. A white film on the surface of the brine is usually harmless yeast; fuzzy colored mold means discard.