2 cups sliced fresh mushrooms（切成碎丁）
1 medium onion, chopped （切成碎丁）
2 (10.75 ounce) cans reduced-fat, reduced-sodium condensed cream of mushroom soup, undiluted （找不到就不放）
1 (8 ounce) bottle clam juice （多放更好）
1/2 cup white wine or chicken broth （两个都放）
6 medium unpeeled red potatoes, cubed
1/2 teaspoon salt
1/4 teaspoon white pepper
3 (6.5 ounce) cans minced clams, with juice