Cold Sesame Noodles

Name: Cold Sesame Noodles
Ingredients: 1 pound Chinese egg noodles or spaghetti; Kosher salt; 1 (1-inch) piece fresh ginger, peeled and chopped; 3 cloves garlic, smashed; 2 tablespoons light brown sugar; 1 cup creamy peanut butter; 3 tablespoons rice wine vinegar; 3 tablespoons low-sodium soy sauce; 1 teaspoon red chili sauce (recommended: Sriracha Hot Chili Sauce); 1 tablespoon toasted sesame oil; 6 tablespoons water; 2 scallions, sliced thin; 1 tablespoon toasted sesame seeds, for garnish; Fresh cilantro leaves, for garnish