Khoresht-e piaz

Persia's ancient onion stew: lamb slow-cooked in an enormous quantity of caramelised onions, saffron, and verjuice until the onions dissolve into a dark, sweet, trembling sauce: the oldest expression of the onion's transformative power

Origin: Iran

From the journey of Onion.

Khoresht-e piaz, literally 'onion stew' in Farsi, is one of the oldest khoreshts (Persian braised stews) in the repertoire of Iranian cuisine. It belongs to a tradition of Persian cooking in which the onion is not merely an aromatic base but the protagonist: one to two kilograms of onions are slowly caramelised in fat until they turn deep amber, then combined with lamb or lamb shanks, verjuice (or pomegranate molasses), saffron, and a restrained spice blend to produce a stew of extraordinary sweetness and depth. This transformation of the raw onion, sharp, pungent, tear-inducing, into something sweet, dark, and almost jammy through the patient application of heat is one of the foundational insights of the ancient Persian kitchen. Iran is the original home of the onion's cultivation, and khoresht-e piaz is perhaps the most direct expression of that five-thousand-year relationship.

Ingredients

Meat

  • 700 g bone-in lamb neck or shoulder, cut into pieces

Onions

  • 1 kg onions (approximately 5 large), thinly sliced into half-moons

Spices

  • 0.5 tsp saffron threads, dissolved in 3 tbsp hot water
  • 0.5 tsp ground turmeric
  • 0.5 tsp ground cinnamon
  • 0.25 tsp ground black pepper

Acid

  • 3 tbsp verjuice (ab ghooreh), or 2 tbsp pomegranate molasses

Seasoning

  • 1 tsp caster sugar (if using pomegranate molasses, to balance)
  • 1 tsp salt

Fat

  • 3 tbsp neutral oil or ghee

Liquid

  • 100 ml water

Method

  1. Heat 2 tbsp oil in a large heavy pot over high heat. Season the lamb. Brown deeply on all sides in batches. Remove and set aside.
  2. Add the remaining oil to the pot. Add all the sliced onions. Cook over medium heat, stirring every few minutes, for 35–40 minutes until they turn deep amber-brown and smell sweet and caramel-like. This long caramelisation is the most important step.
  3. Add the turmeric, cinnamon, and black pepper to the caramelised onions. Stir for 1 minute. Return the browned lamb to the pot.
  4. Add the verjuice (or pomegranate molasses), saffron water, water, and salt. Stir to combine. Bring to a gentle boil. Cover and reduce to the lowest possible simmer.
  5. Cook for 50–60 minutes until the lamb is completely tender and falling from the bone. The sauce should be dark, thick, and syrupy; primarily onion.
  6. Taste and adjust: more salt, more verjuice for sharpness, or a pinch of sugar to balance. Serve over Persian chelow (saffron-steamed rice) with a generous pat of butter.

Notes

The Persian khoresht tradition is one of the world's great braising traditions: a collection of slow-cooked stews that combine the lamb or chicken with fruits, nuts, dried citrus, herbs, or vegetables into preparations of extraordinary complexity. Khoresht-e piaz is among the simplest, depending entirely on the quality of the onion caramelisation rather than exotic ingredients. The use of verjuice (ab ghooreh) reflects the ancient Persian appreciation for the balance between sweet and sour (tart) that runs through the entire cuisine: the same principle that produced fesenjan (walnut and pomegranate stew) and khoresht-e alu (plum stew).

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