Porterhouse Steak With Hoisin Barbecue Sauce

• 6 tomatoes (plum)
• 1 garlic clove
• 1 worcestershire
• 1/2 onion (red)
• 1,100 gr porterhouse steak
• 90 ml hoisin sauce
• 60 ml ketchup
• 30 ml dijon mustard
• 30 ml soy sauce
• 28 gr dark brown sugar