Indian Spiced Cauliflower and Potato aka Aloo Gobi

Bahan-bahan (4 porsi)

• 1 large cauliflower (cut into florets)
• 3 medium potatoes (peeled and chopped into small chunks)
• 1 medium onion (chopped)
• 1 tbsp butter
• salt
• 1/2 tsp garam masala
• 1 tsp coriander
• 1/4 tsp tumeric
• 1/2 tsp chili powder