Step by step recipe:

1. 5 min.
   Cut the fish into fairly large cubes.
2. 3 min.
   Prepare the marinade by mixing 6 tablespoons olive oil, 1 lime, herbs of your choice (bay, rosemary and thyme here), salt and pepper.
3. 3 min.
   Tip the fish into the marinade, mix well, cover with plastic film and leave to marinate for at least one hour.
4. 5 min.
   Cut the mushrooms into large pieces.
5. 10 min.
   If not already in slices, slice the bacon thinly and cook in the oven at 360°F (180°C) on a wire rack until lightly browned.
6. 3 min.
   Cut the slices across into squares.
7. 10 min.
   Make up the slewers, alternating fish with mushrooms and bacon.
   
   If you are not going to cook them immediately, put them on a plate and sprinkle what is left of the marinade over them.
8. 5 min.
   Grill or, preferably, barbecue, turning until cooked on all sides (They can also be cooked on a griddle or in a frying pan if necessary).