Grilled Beef With Sesame Dressing

Name: Grilled Beef With Sesame Dressing
Ingredients: 1 teaspoon sambal oelek or Asian chile paste; 2 small garlic cloves; 2 tablespoons unseasoned rice vinegar; 1 tablespoon soy sauce; 1 1/2 teaspoons sugar; 1 teaspoon Asian sesame oil; 1/4 cup vegetable oil; 4 large scallions, white and light green parts; Four 4-ounce beef tenderloin steaks; Salt and freshly ground pepper; 1 1/2 cups shelled edamame (7 ounces), thawed; 6 medium radishes, thinly sliced; 1 bunch of watercress, thick stems discarded; Sesame seeds, for garnish