Can I make hot and sour soup ahead of time?
Yes. Prepare the broth and vegetables up to 2 days ahead; store separately. Add tofu and eggs when reheating to prevent them from becoming mushy.
How do I get the right balance of hot and sour?
Start with the full amounts of rice vinegar (4 tbsp) and sriracha (1 tbsp), then adjust to taste. Add vinegar for tang, sriracha for heat.
What can I substitute for firm tofu?
Silken tofu works but will break apart more easily. Alternatively, use cooked shrimp, chicken strips, or extra mushrooms for a vegetarian version.
Do I need to cook the eggs a specific way?
Whisk eggs lightly and slowly drizzle into simmering broth while stirring gently to create wispy egg strands, not chunks.
Can I use fresh mushrooms instead of dried shiitake?
Yes, use about 6 oz sliced fresh shiitake or cremini mushrooms. Add them directly to the broth; they won't need rehydration and will cook in about 5 minutes.