Mast-o-khiar (Persian cucumber-yogurt-herb dip)

Persia's most fragrant cucumber preparation: thick yogurt, fresh herbs, raisins, walnuts, and dried rose petals in a dip of extraordinary elegance.

Origin: Tehran / Isfahan, Iran

From the journey of Cucumber.

Mast-o-khiar appears in medieval Persian manuscripts and is mentioned in 10th-century texts, making it one of the oldest continuously documented dips in the culinary record. The word mast means yogurt and khiar means cucumber; a compound name of complete descriptive simplicity. The addition of dried rose petals is distinctly and irreducibly Persian, reflecting the broader Persian culinary genius for combining sweet floral notes with savoury food: rose water, dried rose petals, and rose hip appear across the Persian kitchen from rice dishes to stews to this modest dip. The raisins in the traditional version are not an anomaly; the Persian tradition of balancing sweet and savoury within a single dish is ancient and sophisticated, and the small bursts of sweetness against the sour yogurt and cooling cucumber create a complexity that neither Greek tzatziki nor Egyptian khiyar bil laban attempts. Mast-o-khiar is the probable ancestor of tzatziki, which entered Greek cuisine through the Byzantine-Ottoman period and shed the roses, raisins, and walnuts along the way.

Ingredients

main

2 medium cucumbers, peeled, seeds scooped out, finely diced or coarsely grated
500 g thick strained yogurt (labne, Greek yogurt, or full-fat yogurt hung in cloth overnight)
1 small clove garlic, minced to a fine paste (use sparingly, this is not a garlicky dish)

herbs

3 tbsp fresh dill, finely chopped
2 tbsp fresh mint leaves, finely chopped
2 tbsp fresh chives or spring onion tops, finely sliced

traditional additions

2 tbsp golden raisins or sultanas
3 tbsp walnuts, roughly chopped
1 tbsp dried rose petals (food-grade, unsprayed), plus extra to garnish
0.5 tsp dried mint

seasoning

0.75 tsp fine salt, or to taste

Method

Peel, halve, and deseed the cucumbers. Grate coarsely or dice finely, then place in a cloth or fine sieve and squeeze firmly to remove as much moisture as possible. The yogurt must stay thick.
In a large bowl, combine the thick yogurt, cucumber, garlic paste, fresh dill, fresh mint, and chives. Mix gently but thoroughly.
Fold in the raisins and roughly half of the walnuts. Add the dried rose petals, crushing them lightly in your fingers as you add them, and the dried mint. Season with salt. Taste carefully; the dip should be fragrant, herbal, slightly sweet, and subtly garlicky. It should not be aggressively garlicky.
Transfer to a serving bowl, smooth the surface, and scatter the remaining walnuts and a few dried rose petals over the top. Refrigerate for at least 30 minutes before serving: the flavours improve significantly with resting time. Serve with lavash or sangak flatbread.

Notes

Keeps refrigerated for up to 2 days; the herbs will darken slightly but the flavour deepens. The raisins and walnuts are traditional but not universally used; many modern Iranian households omit them for a simpler version. The rose petals, however, are non-negotiable if you want to make a genuinely Persian mast-o-khiar rather than a generic cucumber-yogurt dip. For a simpler, more widely accessible version, the raisins and walnuts can be omitted; but the rose petals and the abundance of fresh herbs should always remain.

The Gastrographer

Name: Mast-o-khiar (Persian cucumber-yogurt-herb dip)
Prep time: 20 min
Total time: 20 min
Yield: 6
Cuisine: Iran
Ingredients: 2 medium cucumbers, peeled, seeds scooped out, finely diced or coarsely grated; 500 g thick strained yogurt (labne, Greek yogurt, or full-fat yogurt hung in cloth overnight); 1 small clove garlic, minced to a fine paste (use sparingly, this is not a garlicky dish); 3 tbsp fresh dill, finely chopped; 2 tbsp fresh mint leaves, finely chopped; 2 tbsp fresh chives or spring onion tops, finely sliced; 2 tbsp golden raisins or sultanas; 3 tbsp walnuts, roughly chopped; 1 tbsp dried rose petals (food-grade, unsprayed), plus extra to garnish; 0.5 tsp dried mint; 0.75 tsp fine salt, or to taste

Mapping Culinary History

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Journey Point Map Key

Ingredient originTrade or transit route

Became a culinary stapleColonial / trade control