Can I make the shrimp stock ahead of time?
Yes. Simmer the shrimp shells with water, garlic, shallot, and peppercorns for 15–20 minutes, then strain and refrigerate up to 2 days. Use cold stock when making the sauce.
What if I don't have Pinot Grigio?
Use any dry white wine like Sauvignon Blanc, Albariño, or Vermentino. Avoid oaky or sweet wines, which will unbalance the delicate sauce.
Why is my sauce breaking or separating?
The butter must be cold and cubed, and added off heat or over low heat while whisking constantly. If the pan is too hot, the emulsion breaks. Work quickly and keep the sauce warm, not hot.
How do I know when the shrimp are done poaching?
Shrimp are done when they turn opaque and curl slightly, usually 3–4 minutes depending on size. Remove them immediately to avoid overcooking and toughness.
Can I scale this recipe up for a dinner party?
Yes. Double or triple ingredients proportionally, but poach shrimp in batches to avoid crowding the pot and ensure even cooking. Make one sauce batch and keep finished shrimp warm in a low oven.