How long do you soak the rice paper?
Submerge the stacked sheets in warm water for about 10 seconds until pliable. Over-soaking makes them tear; they continue to soften after removal.
Can you make this dish ahead?
The sauce can be made up to 1 day ahead and stored in an airtight container. Toss with freshly cut rice paper noodles just before serving to maintain chewiness.
What can I substitute for black vinegar?
Rice vinegar or regular distilled vinegar work as replacements, though black vinegar's deeper, slightly sweet flavor is traditional. Use the same 1 tablespoon amount.
Is this dish vegetarian?
Yes. The recipe uses soy sauce, which is typically vegetarian; check the label if vegan soy sauce is preferred.
Can I scale this recipe?
Yes. Use 1 sheet of rice paper per serving and multiply the sauce ingredients proportionally. The soaking time and cutting process remain the same.