Instructions
Step 1
Combine [A] in a saucepan and bring to a boil. Reduce to medium heat and simmer for 2–3 minutes. Stir in [B], then refrigerate until chilled.
Step 2
Cut the lemon and sudachi into thin slices. Cook the udon noodles according to the package directions, then rinse under cold water and drain well.
Step 3
Transfer the udon to bowls and top with the lemon and sudachi slices. Pour the chilled broth over the noodles.
Tip
Feel free to substitute your favorite citrus fruit for the lemon and sudachi.