Stir enough of the sauce through the chicken to generously coat. To serve, fill the tacos with the chicken, avocado, tomatoes, lettuce and coriander, with extra sauce on the side.
Add the chicken thighs and turn to coat in the sauce. Move the thighs away from the sides of the pot so they don’t stick when the sauce reduces as it simmers. Cover and cook on low for 5–7 ...