Oriental Spicy Orange Beef

• 1/4 orange marmalade
• 450 gr beef flank
• 240 ml cool beef broth
• 60 ml dry sherry
• 60 ml soy sauce
• 30 ml corn oil
• 24 gr slivered orange peel
• 20 gr corn starch
• 1 gr ginger (ground)
• 1 gr pepper (crushed dried red)