Pressure-Cooker Lamb in Spicy Tomato Sauce

Ingredients

• 1 tablespoon vegetable oil
• 1 kilogram boned lamb leg, chopped coarsely
• 1 medium brown onion (150g), chopped finely
• 3 cloves garlic, crushed
• 2 fresh small red thai (serrano) chillies, chopped finely
• 2 teaspoons ground coriander
• 2 teaspoons garam masala
• 1 teaspoon ground cumin
• 1 teaspoon ground fenugreek
• 1/2 teaspoon ground tumeric
• 410 grams canned crushed tomatoes
• 1/2 cup (125ml) beef stock
• 100 grams baby spinach leaves, shredded finely
• 2 tablespoons finely chopped fresh coriander