🍛 Curry · Level 1
Palak Paneer
Paneer in a vivid green spinach sauce — the colour, texture and flavour all depend on technique. Most recipes produce dull khaki. This one stays green.
Paneer in a vivid green spinach sauce — the colour, texture and flavour all depend on technique. Most recipes produce dull khaki. This one stays green.
Spinach contains chlorophyll — the green pigment that gives it colour. Chlorophyll is heat-sensitive: prolonged cooking above 70°C replaces the magnesium ion at the centre of the chlorophyll molecule with hydrogen, producing pheophytin — a dull, olive-khaki compound. The solution is two-fold: blanch the spinach briefly in boiling water, then shock immediately in ice water to set the green colour before it breaks down. Never cook the spinach in the sauce.
Bring a large pot of salted water to a rolling boil. Add spinach — it will wilt immediately. Blanch exactly 2 minutes. Immediately transfer to a bowl of ice water. Keep in ice water 2 minutes. Drain and squeeze out excess water.
Blanching for exactly 2 minutes softens the cell walls enough for smooth blending while the brief heat exposure does not break down the chlorophyll. The ice water bath rapidly drops the spinach temperature below 40°C, halting all enzymatic and heat-driven chemical reactions. The key reaction stopped is chlorophyllase activity — an enzyme that degrades chlorophyll between 60–80°C — and the thermal replacement of magnesium with hydrogen that produces pheophytin above 70°C with prolonged exposure. Salt in the blanching water helps maintain chlorophyll stability.
Add blanched spinach, green chillies and ginger to a blender. Blend to a rough puree — not completely smooth. Some texture is desirable.
Blending ruptures the cell walls, releasing chlorophyll into the green puree. Adding raw green chilli and ginger at this stage preserves their volatile aromatic compounds — if added to hot oil first, these compounds would partially vaporise before reaching the dish. Incomplete blending preserves some fibrous cell wall material that gives the sauce a slight body and prevents it from thinning out when heated.
Heat ghee, add cumin seeds. When sizzling, add onion and cook 10 minutes until golden. Add garlic, cook 1 minute. Add tomato, turmeric, coriander powder. Cook until tomato softens and oil separates — about 6 minutes.
The masala base is built separately from the spinach puree because the acidic tomato would further accelerate chlorophyll degradation. By cooking the masala fully first, the acid from the tomato has reduced and mellowed before the spinach is added. Adding spinach to a fully cooked masala minimises its exposure to acidic conditions — one of the key reasons palak paneer turns khaki in most recipes where tomato and spinach cook together.
Add spinach puree to masala. Cook on medium-low — never boil. Stir well. Simmer 5 minutes only. Add cream, garam masala, salt. Add paneer last, stir gently, heat through for 2 minutes only. Serve immediately.
Even after blanching and shocking, the chlorophyll in the spinach puree is still vulnerable to heat and acid. Keeping the sauce below a full boil (below 90°C) minimises further degradation. Cream serves two functions: its fat coats the chlorophyll molecules, providing some insulation from the acidic masala; and its milk proteins form a buffer layer that moderates the pH slightly. Paneer added last and heated gently prevents the protein matrix from tightening — above 85°C, the whey proteins in paneer continue cross-linking, producing rubber rather than a soft, yielding texture.