Fried White Fish with Capers, Olives, and Chiles in Vinaigrette

Pescados blancos fritos con alcaparras is a composed cold-serve fish dish rooted in the Lebanese-inflected and Spanish-colonial cooking that took hold along the Campeche coast and in the commercial kitchens of Mérida's prosperous interior. Whole small white fish — typically mojarra (Diapterus spp.) or small snook (Centropomus undecimalis) — or firm fillets of robalo are fried in neutral oil or lard until the skin crisps and the flesh sets through, a process that takes roughly 4 to 6 minutes per side depending on thickness. The fish is dressed while still hot with a vinaigrette built from white wine vinegar or bitter-orange juice, capers packed in brine (drained), pitted green olives, sliced pickled jalapeños (Capsicum annuum), a measure of good olive oil, and sometimes thinly sliced white onion. The acid penetrates the flesh as the fish cools to room temperature over 30 to 45 minutes, producing a texture that is neither raw nor overcooked but distinctly set and moist. The result sits at the intersection of escabeche logic — hot fried protein acidulated in a vinaigrette bath — and the alcaparrado pantry, that brined combination of capers and olives that recurs throughout Yucatán's Lebanese and Spanish-descended cooking traditions. It is served at room temperature, making it a practical centerpiece for midday meals during the heat of the peninsula's dry season. Diana Kennedy, documenting the neighboring state of Tabasco in My Mexico (p. 338), records a related tradition of baking white fish with aromatic vegetables, there wrapped in hoja santa (Piper auritum), which underscores how the Gulf Coast corridor shares a common grammar of fish preparation — acid, aromatics, and layered vegetable flavors — across its state boundaries, even as the specific technique shifts from frying-then-dressing to steaming-in-leaf.