Chaat masala potatoes recipe

Ingredients

• 750 g baby new potatoes, cut lengthways into 1cm-thick (0.5inch) slices
• 2 tbsp olive oil
• 1 tsp chaat masala
• 1/2 tsp ground turmeric
• 250 g Greek-style yogurt
• 1/2 small red onion, peeled and thinly sliced into rounds on a mandolin, if you have one, or by hand (45g1.5oz)
• 1 green chilli, thinly sliced into rounds (10g/0.3oz)
• 1 1/2 tsp coriander seeds, toasted
• 1 1/2 tsp nigella seeds, toasted
• 1 pinch salt
• 30 g fresh coriander (cilantro)
• 1 green chilli, deseeded and roughly chopped (10g/0.3oz)
• 1 tbsp lime juice
• 60 ml olive oil
• 1 1/2 tbsp shop-bought tamarind paste
• 1 1/2 tsp caster sugar
• 0.2 tsp chaat masala