Photo: Subhrajyoti07 · CC BY-SA 4.0 · Wikimedia Commons

Tamilnadu · Lunch

Chettinad Aattu Thalagam (Mutton Head Curry)

Chettinad's legendary slow-cooked mutton head and trotters curry — deeply gelatinous, rich with collagen, and spiced with the full Chettinad spice arsenal. A weekend warrior dish requiring hours of cooking; the result is extraordinary — the gravy is almost molasses-thick.

🧺 Ingredients

• 1 kg mutton head pieces (cleaned, cut by butcher — skull halved, brain removed, cheek meat intact) + 4 trotters
• 4 large onions, finely chopped
• 4 tomatoes, finely chopped
• 3 tbsp ginger-garlic paste
• 2 tsp red chilli powder
• 1.5 tsp coriander powder
• ½ tsp turmeric powder
• 1.5 tsp salt (start)
• 5 tbsp sesame oil
• Handful coriander and mint for garnish
• 2 tbsp coriander seeds
• 1.5 tsp fennel seeds (sombu)
• 1 tsp cumin seeds
• 1 tsp black pepper
• 4 dried red chillies
• 1 piece cinnamon (3 cm)
• 4 cloves
• 3 cardamom pods
• 1 marathi mokku (dried flower pod)
• 1 piece kalpasi (stone flower)
• 1 star anise
• ½ cup fresh grated coconut
• 4 tbsp water for grinding
• 1 tsp mustard seeds
• 1 tsp fennel seeds
• 3 dried red chillies
• 3 sprigs curry leaves
• ¼ tsp asafoetida
• The 45–60 minute final reduction cannot be rushed — this is what transforms the dish from a regular curry into something transcendent.
• The brain can be added in the final 15 minutes if desired (it cooks quickly — just warm through).

👩‍🍳 How to make Chettinad Aattu Thalagam

1. Clean the mutton head thoroughly: The butcher should have cleaned it, but wash again under running cold water. Scrub with a stiff brush. Remove any lingering hair by passing over a flame. Soak in turmeric water (1 tsp turmeric in 4 cups water) for 30 minutes. Drain and wash again.
2. Dry roast the masala (medium heat): In a dry pan, roast each spice group separately for best results — dried red chillies first (1 min), then coriander + fennel + cumin + pepper (2 min), then cinnamon + cloves + cardamom + marathi mokku + kalpasi + star anise (1 min). Cool completely. Grind with grated coconut and 4 tbsp water to a thick, aromatic paste.
3. Pressure cook the head and trotters (high, then medium): In a large 8-litre pressure cooker, add cleaned mutton head pieces and trotters. Add 4 cups water, ½ tsp turmeric, and 1 tsp salt. Cook on high until steam, then medium for 8 whistles. Release naturally (at least 20 minutes). The meat should be tender enough to come off the bones easily.
4. Fry onions (medium heat): In a large, very wide heavy vessel (the pressure cooker base works), heat sesame oil on medium. Add the whole spice tempering: mustard seeds (crackle), fennel seeds, red chillies, curry leaves, asafoetida. Add chopped onions. Fry for 15–18 minutes until deeply golden-brown and significantly reduced.
5. Add ginger-garlic and tomatoes (medium heat): Add ginger-garlic paste — fry 3 minutes. Add tomatoes — cook 10–12 minutes until completely broken down, thick masala forms, and oil separates clearly.
6. Add spice powders and Chettinad masala (medium heat): Add red chilli powder, coriander powder, and remaining turmeric. Fry 1 minute. Add the freshly ground Chettinad paste. Fry 5 minutes, stirring, until the raw smell is completely gone.
7. Add the pressure-cooked head and trotters with their stock (medium heat): Add all the meat pieces and the gelatinous stock (all of it — the stock is flavour gold). Stir everything together. Add salt (total 1.5 tsp adjusted for the stock already having 1 tsp). Bring to a rolling boil.
8. Slow cook to reduce (medium heat, 45–60 minutes): The most important step. Cook uncovered on medium for 45–60 minutes, stirring every 10 minutes, until the gravy reduces dramatically and becomes thick, dark, and the gelatine from the bones makes it glossy and viscous. The oil will separate and float on top. The gravy should coat a spoon so thickly it barely drips. This reduction is non-negotiable.

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