1-Prepare the udon: Prepare the udon. Heat a pot of hot water until it reaches a simmer. Cook the udon until just softened, about 1 minute or according to the package instructions.
2-Cook the bacon: Cook the bacon. In a skillet over medium heat, cook the bacon on both sides until golden brown and crispy. Transfer to a paper towel-lined plate and set aside.
3-Cook the kimchi: Cook the kimchi. Heat 1 tablespoon of cooking oil in a medium skillet over medium heat until hot. Add the chopped kimchi and cook until just wilted about 1-2 minutes.
4-Add sauce: Add sauce. In a small mixing bowl, add the kimchi juice, gochujang, soy sauce, fish sauce, sugar, and water and mix until combined. Pour into the skillet and cook for 2-3 minutes until the sauce thickens and reduces.
5-Add bacon and udon: Add bacon and udon. Add the bacon and udon noodles and toss together until the noodles are evenly coated. Remove from heat and finish with sesame oil.
6-Serve: Serve. Serve in individual bowls and garnish with a fried egg, sesame seeds, and green onion. Enjoy!