Step 1

Thinly slice the beef if it’s not pre-cut. Partially freeze the meat for about an hour to firm it up for easier slicing.

Step 2

Lightly season both sides with the marinade, and let it stand for 20 minutes.

Step 3

Dredge both sides of the beef slice in sweet rice flour, one piece at a time. Let it stand for a few minutes until the flour absorbs the marinade. Then, dredge again in the sweet rice flour to create a nice coating.

Step 4

Heat a large non-stick skillet over medium low heat. Add a tablespoon of oil. Place in the skillet. Cook for 1 to 2 minutes on each side, adding more oil if needed, until lightly golden.

Step 5

Repeat until all the beef slices are pan fried. Serve warm with a dipping sauce.

Step 6

Mix the hot mustard in hot water. Let it stand for a few minutes for the flavor to develop. This step is very important, or the mustard sauce will taste bitter.

Step 7

Mix int the other ingredients, and serve as a dipping sauce.