Prep time: 15 min
Cook time: 30 min
Ingredients: 300 g red lentils (dried); 3/4 medium onion (diced); 2 cloves garlic (crushed); 5 g ginger (grated); 3 tbsp turmeric; 1.5 tbsp cumin; 1.5 tsp chilli flakes (optional); 400 g canned diced tomatoes; 1 cup baby spinach