ingredientskhao soi paste4 hot red chillies (fresh peeled and roughly sliced4 tbsp / 1/4 cup coriander stalks, chopped2 lemongrass stalks, white inner part only, roughly chopped2 small shallots, roughly chopped1 tbsp coriander seeds or 1/2 tsp ground coriander1 1/2 tsp turmeric1 tsp curry powder (i used ho