For the meat:
Dry rice Koji - loosely 1/10th of the weight of protein - 500 grams protein = 50 grams of koji
or 100 grams for a
2 pound Flank steak - or meat of your choice
For the marinade:
1/2 cup shoyu
1/2 cup ketjap manis
1/4 cup yuzu syrup
2 inches of ginger siiced
1/4 cup muscovado sugar
2 tablespoons tomato paste
2 tablespoons rice vinegar