Boil noodles in a large saucepan, add salt, and cook until tender (4-6 minutes). Drain and rinse under cold water.

In a mixing bowl, combine garlic, ginger, and scallions. Add peanut butter, sesame paste, soy sauce, vinegar, and hot water. Whisk until creamy.

Toss chilled noodles with the sauce in the bowl until well coated.

Plate the noodles, garnish with scallion greens, peanuts, and sesame seeds. Serve chilled.