Thick wheat noodles are generously dressed in a rich sesame paste with cucumber, radish, and soy sauce. This hearty Beijing family classic is vegetarian-adaptable and a satisfying summer meal.
Boil a large pot of water, then cook the thick wheat noodles on a rolling boil for 7–9 minutes until chewy but not soft; drain and rinse under cool water to stop cooking.
While noodles cook, finely julienne or shred the cucumber, radishes, and scallions for fresh, crunchy toppings.
In a medium bowl, whisk the sesame paste with 4 tbsp water, soy sauce, rice vinegar, sugar, and salt, stirring constantly until smooth and slightly runny. Adjust with more water as needed.
Divide the cooled noodles between serving bowls; drizzle each with sesame oil and toss to prevent sticking.
Ladle the prepared sesame sauce generously over the noodles, then top with cucumber, radish, and scallion. Serve immediately for best texture and flavor.