1/2 cup shoyu - soy sauce
1/2 cup ketjap manis (sweet soy)
1/4 cup muscovado sugar
1 tablespoon ketchup
8 slices of ginger (minced)
2 tablespoons rice vinegar
2 tablespoons toasted sesame oil
1/2 teaspoon of Villa Jerada Urfa Biber or Red Pepper Mix
Flank steak or other beef cut that you prefer