1. Crush the garlic and cut the pork fillet into bite-sized cubes.
2. Put the sherry, 5 spice powder, sesame oil, sugar, garlic, ginger and soy sauce into a small container with a lid and shake well to combine.
3. Put pork into a plastic food bag and pour in the marinade. Seal the bag and keep in the fridge for at least 2 hours. (If you're passing, give the bag a shake!)
4. Pour the pork and marinade into a bowl.
5. Thread the pork onto skewers, and cook under the grill or on the barbecue for 20-25 minutes until cooked through. Turn the skewers and brush with the remaining marinade occasionally whilst cooking.