Ingredients
Preserved Lemons & Smen
Two preserves separate a tagine that tastes Moroccan from one that merely tastes of stew: preserved lemon and smen. Both are products of an older, un-refrigerated world — ways to capture citrus and butter for the long haul — and both bring a salty, funky, umami depth that fresh ingredients cannot. Here is how they work.
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- 8 min
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- Ingredients
- Updated
- 18 July 2026
At a glance
- Preserved lemons are salt-cured until soft; only the rind is used.
- Smen is aged, salted, fermented butter with a pungent, cheesy depth.
- Both add salt and umami — season the rest of the dish accordingly.
- Preserved lemons are easy to make at home in a few weeks.
Preserved lemons (l'hamd markad)
Preserved lemons are whole lemons packed in salt and submerged in their own juice, then left to cure for several weeks. The salt draws out moisture and softens the fruit until the rind becomes tender, translucent and intensely aromatic, with the sharp acidity mellowed into something rounder, saltier and almost floral. They are a cornerstone of Moroccan cooking, most famously in chicken tagine with preserved lemon and olives.
The key technique point: you use the rind, not the pulp. The soft flesh inside is very salty and usually discarded or used sparingly; the peel is rinsed, then sliced or chopped and added to tagines, salads, dressings and relishes for a burst of salty citrus. Add it toward the end of cooking so its perfume survives.
How to make them at home
They could hardly be simpler, and homemade ones are excellent:
- Scrub organic lemons (thin-skinned varieties like Doqq or Meyer work well), then cut each almost into quarters, keeping the base intact.
- Pack the insides generously with coarse salt and press into a sterilised jar.
- Cram in more lemons, pressing to release juice; top up with fresh lemon juice so all are submerged. Add spices like a cinnamon stick, bay or coriander seed if you like.
- Seal and leave at room temperature for about 3–4 weeks, turning occasionally, until the rinds are soft. Refrigerate after opening; they keep for months.
Smen — aged fermented butter
Smen is butter's pungent, long-lived cousin: butter (or sometimes clarified butter) that has been salted and aged, sometimes for months or even years, developing a strong, tangy, cheese-like or blue-cheese-adjacent funk. Historically it was a way to preserve precious dairy without refrigeration, and well-aged smen was a prized, even celebratory ingredient in some families, buried and kept for special occasions.
In cooking, smen is used in small amounts as a seasoning fat rather than a cooking oil. A spoonful melted into a tagine, stirred through couscous broth, or rubbed into a tanjia adds a deep, savoury, almost meaty richness. Its flavour is powerful and polarising — a little transforms a dish; too much overwhelms it. If you cannot find smen, a small amount of good butter plus a hint of a funky cheese approximates the effect, though nothing quite matches it.
Cooking with both — the golden rule
Because both preserved lemon and smen are salted preserves, the practical rule is: season the rest of the dish cautiously and taste before adding more salt. A tagine built on smen and finished with preserved-lemon rind and olives may need little or no extra salt at all. This is exactly how the classics balance — the salt and funk of the preserves carry the seasoning, while fresh herbs and spices lift it.
See both in action in our chicken tagine recipe, and note how they anchor Marrakech's own tanjia. For where these sit among the wider pantry, the ingredients glossary has the full map.
Buying them in Marrakech
Both are sold loose in the souks — preserved lemons from glistening tubs alongside the olives, and smen from the dairy and spice sellers, often scooped from a communal pot and sold by weight. The olive-and-preserved-lemon stalls in the Medina are a feast for the eyes. If you are buying smen to take home, remember its aroma is potent; pack it well. Our spice-souk shopping guide and the markets pillar cover how to buy loose goods without overpaying.
Frequently asked questions
Can I substitute fresh lemon for preserved lemon?
Not really — they are different ingredients. Fresh lemon adds bright acidity; preserved lemon adds a mellow, salty, almost floral depth built up over weeks of curing. In a pinch, fresh lemon zest with a little extra salt gestures toward it, but it will lack the fermented complexity that defines a Moroccan tagine.
How do you use preserved lemons in cooking?
Use the rind, not the salty pulp. Rinse it, slice or chop it, and add it to tagines, salads, dressings and relishes — usually toward the end of cooking so the salty, floral-citrus aroma survives. The classic use is chicken tagine with preserved lemon and olives.
What is smen and what does it taste like?
Smen is salted, aged, fermented Moroccan butter with a strong, tangy, cheese-like flavour. Used in small amounts, it melts into tagines, couscous and tanjia to add deep, savoury richness. Its taste is powerful and polarising, so a little goes a long way.
Can I make preserved lemons at home?
Yes, easily. Pack quartered lemons with coarse salt in a jar, cover with lemon juice so they are submerged, and leave at room temperature for about 3–4 weeks until the rinds soften. Refrigerate after opening and they keep for months.
Do I need to add extra salt when cooking with preserved lemon and smen?
Usually very little. Both are salted preserves, so they season the dish as they cook. Add them, then taste before adding any further salt — a tagine using both may need none at all.