1 tsp turmeric
1/2 tsp chili flakes
4 cloves garlic, minced
1 inch piece ginger, peeled and minced
1 onion, sliced thinly
3 lbs potatoes, any variety, cut into a large dice
1 bag spinach, roughly chopped
4 cups chicken stock or water
greek yogurt (optional)
cilantro (optional)