Can I make hot and sour soup ahead of time?
Yes. Prepare the broth base and vegetable components up to 2 days ahead. Store separately in the refrigerator. Add tofu and egg ribbons just before serving to maintain texture.
How do I rehydrate dried shiitake mushrooms?
Soak dried shiitake in hot water for 15–20 minutes until tender, then slice. Reserve the soaking liquid (strained) to use in the broth for extra umami flavor.
What can I substitute for firm tofu?
Silken tofu, pressed extra-firm tofu, or omit entirely. For protein alternatives, use diced chicken breast, shrimp, or bamboo shoots.
How thick should the soup be?
The cornstarch slurry (mixed with cold water before stirring in) thickens the broth to a light, silky consistency. Start with the full 1/4 cup and adjust by adding more slurry if needed.
Is this soup vegetarian?
Use vegetable broth instead of chicken broth (the recipe calls for both, so adjust as needed). The soup is naturally vegan if you omit the eggs or use aquafaba.