Steamed Vegetables with Ponzu Sauce

Name: Steamed Vegetables with Ponzu Sauce
Ingredients: 1/2 cup soy sauce; 1/4 cup water; 2 tablespoons rice wine vinegar; 1 1/2 tablespoons freshly squeezed lime juice; 2 tablespoons orange juice; 1/2-inch knob fresh ginger, peeled and grated (about 1 tablespoon); 1 serrano chile, stemmed and sliced (with seeds); 1 scallion (green and white), thinly sliced; 1/2 teaspoon cracked coriander seeds, optional; 1/2 bunch broccoli, cut in large florets; 1/2 bunch cauliflower, cut in large florets; 2 carrots, cut in thick slices; 1 yellow or zucchini squash, cut in thick rounds; 1/2 to 1 head fennel, cut into thin wedges; 1 bunch asparagus; 8 cloves garlic; 1 bunch scallions