Slice an inch off the bottom of the packaged enoki and discard it. Take the mushrooms out of the package and slice them flat but lengthwise to make 1/2-inch thin "sheets" of enoki for more surface to sear.
Pick out any dirt from the mushooms and dunk each slice in water to clean while keeping them intact.
Place pan on high heat, add a bit of oil, and sear the mushrooms on both sides. It will release water and because of the high heat, it will evaporate, then create golden brown sear marks.
Meanwhile, combine gochujang, soy sauce, sugar, garlic, sesame oil, black pepper, hot chili peppers, and water, then mix thoroughly until if forms a uniform paste.
Once the mushrooms are nicely golden brown, pour the sauce on top, spreading them out, covering every strand.
Let the mushrooms simmer in the sauce until it has reduced and has been thoroughly absorbed.
Garnish with sesame seeds, serve, and enjoy!