Potato and spinach curry (alor palak)

Ingredients

• 3 medium (abt 400g) potatoes - remove skin
• 1 tbsp turmeric powder
• 1 bunch (abt 200g) spinach (the smaller ones) - remove the roots, soaked in water and cut into 1 inch length
• 4 red chillies - cut into 2 and remove seeds
• 5 garlic - remove skin
• 6 shallots - remove skin
• 1 (abt 100g) tomato - sliced
• 1/2 cup milk (carton milk)
• For Tempering
• 2 sprigs curry leaves
• 1 tsp fenugreek (halba) seeds
• 1 tsp cumin (jintan manis) seeds
• 3 tbsp oil
• salt to taste