Slow Cooker Thai Chicken and Wild Rice Soup

onion (diced)

celery ribs (diced)

garlic cloves

fish sauce

red curry paste

cup/250 ml crushed tomatoes

cup/125g wild rice

chicken breasts

cups/1.5 litre low-sodium chicken stock

cup/6 large mushrooms (sliced)

cup/100g black kale/cavolo nero (sliced)

lime (juice only)

brown or palm sugar

cup/30g cilantro (chopped)

peanuts (chopped (optional))