For the tacos, heat the oil in a large saucepan over a medium heat and add the garlic and spices and cook for about 30 seconds. Add the mince base, along with a splash of water and cook on a low heat.
To make the marinade, place all the ingredients into a large bowl and mix well. Add the chicken and turn several times until well coated. Cover the bowl and put in the fridge to marinate for 30 ...