Sprinkle 250 g thinly sliced beef tongue with a few pinches of salt and set by the stove.
Finely dice the white part of 100 g Japanese leek (naganegi). In a separate bowl, combine 2 tbsp toasted sesame oil, 1 tsp lemon juice, 1 tsp honey, 1 clove grated garlic, ½ tsp sea salt, ½ tsp Chinese-style chicken bouillon powder, ½ tsp yellow miso paste (awase), ¼ tsp Japanese soy sauce (koikuchi shoyu), and ⅛ tsp ground black pepper. Once smooth, pour it over the leek, mix and set aside for 10 minutes.
Heat a cast iron pan on high and add 1 tsp beef suet (fat) or a drizzle of cooking oil.
Once smoking hot, add the beef tongue slices in a single layer and sear for 1 - 1 min 30 seconds (depending on thickness) while dabbing the tops with kitchen paper to remove excess juices.
Flip and sear the other side for 30 seconds.
Prepare 2 ptn cooked Japanese short-grain rice and add a small amount of negi shio sauce directly on the rice before arranging the beef tongue slices on top. Divide the rest of the sauce between each serving and sprinkle with toasted white sesame seeds, chopped green onions and a blob of wasabi paste. Enjoy!
Notes
If you can't get Japanese leek, use regular leek or green onions.
For tips on how to cut Japanese leek, check out the how to cut negi (mijin-giri) section of my What is Negi? article.
This dish also works well with beef steak, pork belly slices and even chicken thigh. When using substitutions, adjust the cooking time as necessary.
If you can't fit the beef tongue in a single layer in your pan, cook in batches to avoid over-crowding.
This recipe is based on using beef tongue cut 5mm or thinner. If using thicker cuts, use a medium heat to ensure it cooks all the way through, then increase the heat at the end for a final sear.