Start by thinly slicing 200 g canned bamboo shoots and cutting them into pieces about 1cm wide, 3-4cm long. (Approx ¾" by 1 ¾ inches)
Heat a pan on medium and add ½ tbsp toasted sesame oil. Once hot, add the sliced bamboo shoots and sprinkle with ⅛ tsp black pepper and 1 tsp dried red chili pepper. Fry for 1 minute.
Add the 180 ml water, 1 tbsp Japanese soy sauce (koikuchi shoyu), 1 tbsp sake, 1 tbsp mirin, ½ tbsp oyster sauce and 1 tsp Chinese-style chicken bouillon powder to the pan. Mix well and simmer uncovered until the liquid is completely gone.
Turn off the heat and drizzle ½ tbsp toasted sesame oil, mix throughly until evenly coated.
Transfer to a container to cool, then chill in the refrigerator. (You can also eat them hot if you like.)
Enjoy alongside your other favorite ramen toppings!
Notes
Chicken bouillon powder varies by brand. My brand is 1 tsp per 200 ml, so if yours is more concentrated (e.g., 1 tsp per 300 ml or 1 cup), use touch less to avoid oversalting.