Techniques
How to Make Smen (Preserved Butter)
Smen is Morocco's aged, salted, clarified butter — funky, pungent and almost cheese-like, used in tiny amounts to give couscous, harira and certain tagines a deep, savoury backbone. It is an acquired taste, historically a way of preserving butter without refrigeration, and a little goes a very long way.
At a glance
- Clarify butter, remove the milk solids, then salt heavily to preserve it
- Age sealed in a cool dark place for weeks to months for the pungent flavour
- Young smen is mild; long-aged smen is intensely cheesy and sharp
- Use tiny amounts in couscous, harira and rich tagines
Guide
The base is clarified butter. Melt good unsalted butter gently and let it separate, then skim the foam and pour off the clear golden fat, leaving the milky solids behind — those solids are what would otherwise spoil. Traditionally the butter is worked with salted water and sometimes simmered with herbs like oregano (za'atar) or thyme, then heavily salted, which is the preservative that lets it age safely.
Pack the salted, clarified butter into a sterilised, airtight jar or a traditional earthenware pot, seal it well, and store it somewhere cool and dark. Over weeks and months it matures, developing the sharp, tangy, fermented aroma smen is known for. Young smen is mild; long-aged smen — sometimes kept for years and buried as a prized store — is intensely pungent, closer to a strong blue cheese.
Use it with restraint. A small knob stirred into couscous, melted into a harira, or added to a rich lamb tagine adds an umami depth and roundness you cannot get from fresh butter. Because it is powerful and salty, add it early and taste before seasoning further. If you cannot make or find it, a mix of clarified butter (ghee) with a little crumbled aged cheese or a splash of the brine from feta approximates its savoury tang.
Practical tips
- 1
Salt is the preservative — under-salting risks spoilage over a long age.
- 2
Sterilise the jar and keep it truly airtight; smen ages, it should not grow mould.
- 3
Start with young smen if the aroma is new to you — it mellows into dishes more gently.
- 4
Add it early in cooking and taste before adding more salt; smen is already salty.
- 5
No smen? Ghee plus a little aged-cheese tang gets you surprisingly close.
Frequently asked questions
What does smen taste like?
Salty, tangy and pungent — young smen is mild and buttery, while long-aged smen develops a sharp, fermented, almost blue-cheese depth. It adds umami and roundness to savoury dishes.
How long does smen keep?
Properly salted and sealed, months to years — it is designed as a preserved store. The longer it ages, the stronger and funkier it becomes.
What can I use instead of smen?
Clarified butter or ghee for the fat, plus a little crumbled aged cheese or a splash of feta brine to mimic the salty, tangy funk. It is an approximation, but it works in couscous and tagines.
Try the recipes
Put the tip into practice with these free step-by-step recipes: