Prepare rice according to package.
Mix the cucumbers, rice vinegar, sugar and red pepper flakes in a small bowl. Toss to combine and set aside to marinate.
Add the ground beef to a large pan, cooking until fully browned. Add the chili garlic sauce, coconut sugar if using and Korean hot sauce. Set aside.
In a separate pan, saute the mushrooms with a teaspoon of canola oil. Once they've reduced a bit and cooked well, add a splash of sesame seed oil (½ tsp or to taste). Set aside.
In the same pan, saute the spinach or other greens until just wilted. Again, add a splash of sesame seed oil to taste.
Fry an egg à la gooey egg technique to add on top.
Make your bowls! Use the rice as a base, then add the meat, greens, mushrooms, cucumbers and other toppings (carrots, kimchi). Top with the runny egg, sesame seeds and another splash of the hot sauce.
Mix to combine it all together for some serious noms. Dig in.