¼ cup creamy peanut butter
¼ cup well-shaken coconut milk
2 tablespoons soy sauce
2 tablespoons rice vinegar
2 tablespoons finely minced lemongrass
1 teaspoon kosher salt
½ teaspoon toasted sesame oil
¼ teaspoon Asian chili-garlic sauce
1 large shallot, thinly sliced (about ¼ cup)
8 ounces uncooked soba noodles
1 pound unpeeled raw medium shrimp, deveined
¼ cup torn fresh mint leaves
¼ cup Thai basil leaves
1 small Thai chile, minced (about ¼ tsp.) (optional)
lime wedges for serving