Satay Chicken Stir Fry

chicken breast fillets, sliced thinly

baking soda (see Kitchen Notes below)

mild curry powder (see Kitchen Notes below)

coconut milk, plus more to taste

water

smooth peanut butter

sugar

soy sauce

rice vinegar

Sriracha (optional)

mild curry powder (see Kitchen Notes below)

ground coriander

ground cumin

turmeric

fine salt

ground white pepper

vegetable oil

red capsicum (bell pepper), cut into large dice

green capsicum (bell pepper), cut into large dice

large brown onion, cut into large dice

garlic cloves, finely chopped

lemongrass stalk, coarsely grated or very finely chopped

unsalted cashew nuts (optional)

spring onions (scallions), finely sliced

coriander (cilantro), finely chopped