Spirulina in curry sauces.

The heat problem and the solution

• Phycocyanin vs curry heat:A tarka (tadka) with oil reaching 180°C, a simmering curry base at 95–100°C, a baked curry at 180°C in the oven — all destroy phycocyanin within seconds of contact. Stirring spirulina into a hot curry base destroys the phycocyanin immediately. The protein and minerals survive; the therapeutic tetrapyrrole does not.
• Chlorophyll in cooked curry:If you stir spirulina into a simmering curry sauce, the residual chlorophyll will contribute a subtle green shift to the sauce colour. This can be visually interesting in saag-style dishes. You are using spirulina as a colouring and protein supplement at that point, not for phycocyanin.
• The cold condiment strategy:South Asian cuisine already provides the solution: raita, green chutneys, and yogurt dips are served cold alongside hot curry. These are the vehicles for spirulina’s phycocyanin. The contrast of hot curry flavours and cold spirulina condiment is both temperature-correct and culinarily appropriate.

Recipe 1: Spirulina raita

Per serving (4). Raita is a cooling yogurt-based condiment traditionally served to balance the heat of spiced dishes. Full phycocyanin preserved.

• 300 g plain yogurt (full-fat)
• 1 cucumber, grated and squeezed dry
• 2 g spirulina powder
• 1/2 tsp cumin, toasted and ground (add after cooling to <40°C)
• Fresh mint, chopped
• Pinch of salt

Mix spirulina into yogurt thoroughly before adding other ingredients — yogurt fat disperses spirulina without clumping. Fold in cucumber, cooled cumin, and mint. Serve cold alongside any curry. The yogurt masks spirulina’s flavour almost completely; the mint and cumin are dominant. Toast cumin in a dry pan but allow to cool below 40°C before adding to yogurt to preserve the spirulina.

Recipe 2: Green spirulina chutney

Serves 4–6. No-cook preparation — full phycocyanin preserved. Classic mint-coriander chutney enriched with spirulina.

• Large bunch fresh coriander (60 g)
• Large bunch fresh mint (30 g)
• 1 green chilli (optional)
• 2 tbsp lemon juice
• 1 garlic clove
• 1 tsp ginger, grated
• 3 g spirulina powder
• 2 tbsp water
• Salt to taste

Blend all ingredients until smooth. The spirulina amplifies the already-vivid green of the fresh herbs. The lemon juice stabilises phycocyanin slightly and contributes vitamin C for iron absorption. This chutney stores in the fridge for 2–3 days (covered); phycocyanin is stable overnight at 4°C.

Recipe 3: Spirulina cashew curry sauce (warm, not hot)

Serves 2. This is a coconut-cashew sauce that is blended and served warm — not hot. The spirulina is added after blending once the sauce has cooled to below 40°C.

• 1 can coconut milk (400 ml)
• 80 g cashews, soaked and blended with 100 ml water to a cream
• 1 tbsp curry powder (add at blending stage)
• 1 tsp turmeric
• 1 tsp ginger, grated
• 1 garlic clove
• Salt and lime juice
• 3 g spirulina powder, stirred in after cooling

Blend coconut milk, cashew cream, spices, and aromatics until smooth. Heat to simmering briefly to develop flavours (2–3 minutes). Remove from heat and allow to cool to <40°C. Stir in spirulina thoroughly. The fat from cashew and coconut disperses spirulina evenly. Serve warm (not hot) over rice or noodles with vegetables or protein cooked separately.

Recipe 4: Spirulina tzatziki with Indian spice

Per serving (4). A fusion of tzatziki and Indian flavours — works with any grilled meat or vegetable dish.

• 250 g Greek yogurt
• 1/2 cucumber, finely grated and squeezed dry
• 2 g spirulina powder
• 1/2 tsp ground cumin
• 1/4 tsp ground coriander
• 1/4 tsp garam masala (cool before adding)
• 1 tbsp lemon juice
• Fresh coriander leaves

Mix all spices (allow to cool if freshly toasted) into yogurt with spirulina. Add cucumber and coriander. The garam masala, coriander, and cumin completely mask spirulina’s mineral taste. This is one of the most effective flavour masking formats for spirulina.

Recipe 5: Cooling spirulina dressing for warm grain bowls

Serves 2. Drizzled over warm (not hot) rice, quinoa, or lentil bowls after the grains have cooled slightly.

• 4 tbsp tahini
• 3 tbsp lemon juice
• 2 tbsp cold water
• 1 tsp cumin
• 1/2 tsp turmeric
• 1 garlic clove, grated
• 2 g spirulina powder
• Salt to taste

Whisk all ingredients — the tahini and lemon create a thick sauce; thin with water to drizzling consistency. Spirulina disperses easily in the fat-containing tahini. Pour over grain bowls once the grain has cooled to eating temperature (<60°C food safe, <40°C for full phycocyanin). This covers the full spectrum: curcumin (NF-κB), phycocyanobilin (NOX2), and lemon vitamin C (iron absorption).

Spice compound synergies

• Turmeric/curcumin:NF-κB inhibition via IKK-β inhibition (different binding site from phycocyanobilin). Add black pepper (piperine) for 20× bioavailability enhancement of curcumin.
• Ginger/gingerols:NF-κB and 5-LOX inhibition. Complementary to both curcumin and phycocyanobilin.
• Capsaicin:TRPV1 activation triggers anti-inflammatory signalling via CGRP. Distinct mechanism. The brief burning sensation from chilli also masks any spirulina aftertaste.