Preheat the oven to 130ºC/250ºF/gas ½. Add a splash of olive oil to a large frying pan over a medium heat. Roughly shred and add the turkey (if you’ve got the skin, add that too) and cook for 2 to 3 minutes, or until warmed through. Grate in the lime zest and stir in the chilli sauce, then reduce the heat to low and cook for a further 2 to 3 minutes, or until crisp and slightly caramelised.
Meanwhile, place the baguettes in the oven to warm through. Peel and add the garlic and most of the ginger to a pestle and mortar, then bash to a smooth paste with a pinch of salt and 2 to 3 tablespoons of extra virgin olive oil. Muddle in the mayo and the juice from the lime, then pick in the coriander leaves and stir to combine. Set aside.
To make the pickle, peel the carrot, then coarsely grate and add to a large bowl along with the cucumber and cabbage. Peel, finely chop and add the remaining ginger, then sprinkle over a pinch of salt and scrunch together with your hands to get rid of any excess liquid. Add 1 teaspoon of sesame oil, the soy and vinegar and toss well to combine.
Open out the warm baguettes, spread the chicken liver paté onto one side of each, then pile over the turkey and pickled veg. Finish with a dollop of lime-spiked mayo, then finely chop and scatter over the chilli (if using) along with the reserved coriander leaves. Press down slightly on the baguettes to close, then cut the banh mi into chunks and tuck in.