Cook noodles (pasta works perfectly) until al dente. Drain and rinse immediately under cold water to stop cooking and cool them down. Toss with a splash of sesame oil to prevent sticking.
Make dressing: whisk together peanut butter, soy sauce, sesame oil, garlic, a small amount of grated ginger, honey, and lime juice. Add warm water 1 tablespoon at a time until pourable. Taste — adjust with soy for saltiness, honey for sweetness, lime for brightness.
Toss cold noodles with dressing until every strand is coated.
If too thick, add more water or a splash of soy sauce.
Serve cold or at room temperature. Topped with anything crunchy makes them better.