Step 1

Bring a large saucepan of water to a boil. Add spaghetti and cook according to package directions. Reserve 1/4 cup of the water, then drain the pasta and rinse well with cold water.

Step 2

Whisk the reserved pasta water, peanut butter, shallot, curry paste, ginger, soy sauce, oil and salt in a large bowl. Add the pasta, edamame, bell pepper and kohlrabi (or broccoli stem); toss well to coat. Serve topped with cilantro, if desired.