Mix together all the liquid ingredients in a large, flat bowl and add in the ginger (once grated)
Place the salmon in the bowl, skin side up, and leave to marinade for an hour.
Remove the salmon from the bowl and place, skin side down, on to a baking tray. Pour the marinade over the fillets. Bake for 25 minutes at 200C/180C fan/gas6.
Remove from the oven. Turn the fillets on to their side and slice off the skin. Then serve with your side of choice.