Sprinkle generously with the dried ground ginger and rub into the soya sauce so the whole fillet is well covered with both ingredients.
Place on a Roasting Tray. Place in preheated oven on middle rack.
Roast for 20 minutes per kilo – DO NOT OVERCOOK. Test by snipping off the thin end of the fillet – this should be cooked through – do not be tempted to open up the middle of the fillet.
The inside will be very pink.
When cool, wrap in tin foil and pop into the fridge. When needed slice about 1 cm pieces and arrange on a meat platter. Serve with different mustards or a Béarnaise Sauce