In a bowl place the sugar, water, vegetable oil, lemon zest, minced garlic, pepper and soy sauce and mix together until as much of the sugar has dissolved as possible.

Once you have made the marinade you now place the salmon fillet into a large resealable plastic bag and pour the marinade over it.

Close the bag up and then turn it over several times to ensure that the fillet of salmon is completely covered in the marinade.

Place in the refrigerator for at least 2 hours.

Once the two hours has passed removed the salmon from the refrigerator and start heating up the barbecue.

By the time the barbecue has heated up the salmon fillet should have come up to room temperature and will be ready to start cooking.

To cook the salmon fillet on the barbecue you can either place it directly on to the grate that has been lightly oiled or directly on to a piece of aluminum foil that has been lightly oiled.

Any marinade that remains should now be discarded.

You should cook each side of the salmon for between 5 and 6 minutes or when you use a fork to separate the flesh it flakes easily.

Once cooked simply place on a clean plate and then allow your guests to help themselves.