Teriyaki beef skewers - Irish Beef

Ingredients

• 500g sirloin steak
• 1 red onion
• 200ml dark soy sauce
• 6 garlic cloves, minced
• 50ml cup sesame oil
• 1 tbsp vegetable oil
• 1 tbsp caster sugar
• 1 tbsp sweet sherry
• 1 tbsp grated ginger
• 2 tbsp sesame seeds
• Sliced green onions, for garnish
• skewers
• Ingredients
• Method