Mast-o-Khiar
Also: Mast-o-Khiyar, Persian cucumber yogurt, Iranian yogurt with cucumber
A Persian cold side of thick strained yogurt folded with finely diced or grated cucumber and dried mint, optionally enriched with raisins and toasted walnuts to produce a sweet-savoury contrast.
Identity criteria
- 1Strained yogurt — thick enough to hold shape and coat a spoon without pooling
- 2Dried mint (not fresh) as the primary aromatic, rubbed between the palms before folding in
- 3Persian-style thin-skinned cucumber, salted and pressed to shed excess water before mixing
- 4Optional but canonical raisin-walnut additions that create the defining sweet-savoury-bitter register
- 5Served cold and immediately consumed or chilled — never warm
- 6No garlic in the baseline canonical form (garlic marks a distinct variation, not the dish itself)
Components
strained whole-milk yogurt (full-fat, Greek-style or homemade Persian mast)essentialMust be strained to at least a Greek-yogurt consistency; runny yogurt makes the dish watery
Persian cucumber (khiar), grated or finely diced, salted and squeezed dryessentialThin-skinned varieties release less bitterness; water must be pressed out or the yogurt thins
dried mint (na'na' khoshk)essentialDried mint gives a more intense, dusky flavour than fresh; rub between palms to bloom before adding
fine sea saltessential
white pepper or black pepperoptional
raisins (keshmesh)optionalTraditional addition that supplies sweetness and a chewy counterpoint
walnut halves or roughly chopped walnutsoptionalProvides bitterness and crunch; part of the canonical savoury-sweet balance
dried rose petalsoptionalAesthetic and aromatic garnish common in more elaborate presentations
Technique
- Salting and pressing cucumber
- Cucumber holds roughly 95% water; without pressing, it migrates into the yogurt within minutes, breaking the dish's texture and diluting flavour
- Straining yogurt
- Unstrained yogurt produces a soup rather than a cohesive dip; straining concentrates flavour and gives the dish body
- Blooming dried mint
- Rubbing dried mint between warm palms or briefly warming in a dry pan releases volatile oils; skipping this step leaves the mint tasting dusty and flat
- Gentle folding (not blending)
- Over-working breaks down the cucumber into mush and deflates the yogurt; a light fold preserves distinct texture contrasts
Form & serving
- Served
- Spooned into a shallow bowl, garnished with a pinch of dried mint, a few raisins and walnut pieces, and optionally rose petals
- Temperature
- Cold (refrigerator temperature, 4–8 °C)
- Portion
- Individual side bowl or shared meze plate alongside rice, kebab, or bread
- Pairs with
- chelow (steamed Persian rice) · kebab · lavash or sangak bread · ghormeh sabzi · khoresh stews · other mezze (olivieh, borani)
Character
Flavour
Texture
Thick and creamy with soft-crisp cucumber pieces and occasional chewy raisin and crunchy walnut
Eaten
Everyday Persian home table as a cooling accompaniment to rice and grilled or stewed meat; also standard on the sofreh (spread table) for gatherings, Nowruz celebrations, and as part of a meze selection alongside other borani and salads
When
spring · summer
Variations & related
Regional variations
- Mast-o-Khiar ba Sir · Iran (home cooking, some regional)
Adds one small crushed garlic clove; shifts the flavour toward the tzatziki register but is a recognised Iranian variant
- Mast-o-Khiar ba Shevid · Northern Iran (Gilan, Mazandaran)
Incorporates fresh or dried dill alongside or instead of mint, reflecting the herb-intensive cuisine of the Caspian littoral
- Mast-o-Khiar ba Somagh · Iran (festive settings)
Sumac dusted on top as garnish, adding tartness and colour
- Tzatziki · Greece / wider Levant
Closest international relative — garlic is essential and non-negotiable, fresh dill or mint replaces dried, no raisins or walnuts; a sibling, not the same dish
Related dishes
- sibling Tzatziki
Greek analogue — garlic-forward, fresh herb, no raisins or walnuts; shares the yogurt-cucumber base but is a distinct dish
- sibling Cacık
Turkish version — thinner consistency, often served as a cold soup; garlic present, dried mint or dill
- sibling Raita
Indian subcontinent yogurt-and-vegetable side; thinner, often includes cumin and coriander; shares Persian culinary ancestry
- sibling Borani Esfenaj
Fellow Persian borani (yogurt-based side) with spinach; same format, different vegetable component
- pairs-with Chelow Kabab
Classic pairing — the cool acidity of mast-o-khiar cuts the char and fat of grilled meat
- pairs-with Ghormeh Sabzi
Rich herb stew contrasted by the cooling yogurt side
Substitutions
Persian cucumber → English (hothouse) cucumber, seeded and pressedadmissible
Acceptable; skin can be left on; more water must be pressed out
strained whole-milk yogurt → full-fat Greek yogurtadmissible
Direct substitute; closest available equivalent outside Iran
dried mint → fresh mint, finely chiffonadedinadmissible
Yields a brighter, grassier flavour; canonical dish uses dried — using fresh shifts the character noticeably
raisins → currants or barberries (zereshk)admissible
Zereshk adds tartness rather than sweetness; changes but does not destroy the sweet-savoury register
walnuts → pine nuts or almondsinadmissible
Loses the characteristic bitterness of walnut that balances the raisin sweetness
strained yogurt → low-fat or fat-free yogurtinadmissible
Fat carries flavour and gives body; low-fat results in a thin, sour dish lacking richness
strained yogurt → sour cream or labnehinadmissible
Labneh is very close and safe; sour cream lacks the probiotic tang and is not Persian in character
Common mistakes
- Skipping the cucumber-pressing step, which turns the dish watery within 20 minutes
- Using fresh mint instead of dried, producing a grassier, sharper flavour that lacks the earthy depth of the canonical version
- Using low-fat or unstrained yogurt, resulting in a thin, sour liquid rather than a cohesive side
- Omitting the raisins on the assumption they are optional garnish rather than flavour-structural elements
- Adding garlic and treating the result as the same dish rather than a variant
- Over-mixing, which breaks cucumber down to mush and deflates the yogurt
- Serving at room temperature instead of chilled, which mutes flavour and compromises food safety
Provenance
Mast-o-Khiar has been a fixture of Persian table culture for centuries, documented in medieval Iranian cookery manuscripts and embedded in the broader tradition of borani (yogurt-based sides) that spans the Iranian plateau. Its pairing of yogurt with cucumber and dried herbs reflects a culinary logic common to the Silk Road corridor, where cooling dairy-and-vegetable preparations balance spiced or grilled main dishes. The dish's origin is unambiguously Iranian; related preparations in Turkey (cacık), Greece (tzatziki), and South Asia share a common ancestry in Persian-influenced courtly cuisine but diverged meaningfully in ingredients and function.
References
- 1.Muhammad Ali Bahmanyar, Khorak-haye Irani (traditional Iranian cookery compendium)
- 2.Najmieh Batmanglij, Food of Life: Ancient Persian and Modern Iranian Cooking (Mage Publishers)
- 3.Margaret Shaida, The Legendary Cuisine of Persia (Liber Publishing)
- 4.Living oral tradition — standard home preparation across Iranian households
Confidence: high