Salsa verde vasca

Basque Country, Spain

The Basque green sauce — a liaison of olive oil, abundant fresh parsley, garlic, white wine, and the gelatin released from white fish during cooking. It appears to be a simple parsley sauce but is actually a controlled emulsion distinct from its Italian namesake. The Basque salsa verde is cooked (not raw), warm (not room temperature), and owes its body entirely to fish collagen rather than any thickener. Traditionally served with merluza (hake) and clams — the clams contribute both flavour and additional gelatin. The sauce is green because of the parsley volume, not garnish. This is not tablespoon-of-parsley territory: a generous handful per portion is the baseline.