Al cartoccio is the Italian form of en papillote, meaning “contained” or “in paper”, which is an effective cooking method that traps the moisture (and flavour) released from the ingredients and creates a steamy poaching chamber – it’s a bit like a Turkish bath for food! Once out of the oven, but still sealed, the scented steam trapped in the paper returns to liquid and creates a brothy sauce. Fish with firm white or pink flesh that breaks into fat flakes is particularly well suited to cooking al cartoccio, both whole fish (cleaned and on the bone) and individual filets (estimate 110g-140g per person).
When choosing fish, keep in mind our collective default to cod and haddock, both members of the so-called “big five” that make up a staggering 80% of UK consumption. Instead, look out for other species, such as hake, huss or North Sea plaice, ASC-certified Scottish salmon, sea trout or farmed rainbow trout. For more detailed and updated advice, the Marine Conservation Society produces an invaluable, area-by-area good fish guide that uses a five-tiered system to rank both “best choice” and “fish to avoid” based on the species, location and fishing method. Also, don’t forget how well fish freezes, so always check the frozen food section, too.
