Awesome Korean Steak

INGREDIENTS
- 2 pounds thinly sliced Scotch fillet (chuck eye steaks)
- 1/2 cup soy sauce
- 5 tablespoons white sugar
- 2 1/2 tablespoons sesame seeds
- 2 tablespoons sesame oil
- 3 shallots, thinly sliced
- 2 cloves garlic, crushed
- 5 tablespoons mirin (Japanese sweet wine)