Spicy Barbequed Steak

• 1 clove garlic
• 1,400 gr chuck blade steaks
• 240 ml catsup
• 120 ml water
• 60 ml soy sauce
• 30 ml vinegar
• 14 gr brown sugar
• 5 ml prepared mustard
• 5 gr horseradish
• 4 gr adolphs meat tenderizer