Heat a large pot of water until it boils. In the meantime: peel and cut the cucumber in julienne sticks (approx. 2.5 - 3 inch long, 1/8 inch wide & high). Also, chop the peanuts coarsely (pulse once or twice in a food processor is the easiest way, but be careful: don't turn them to flour!)

Once the water boils, add the noodles and cook for 5 minutes or al dente (be careful not to overcook them!). While the noodles cook: combine oil, soy sauce, vinegar, yuzu paste, peanut butter, sugar, ginger, garlic and gochujang in a small bowl. Whisk until smooth and silky.

Serve in bowls and garnish with the cucumbers and the chopped peanuts. Enjoy!