Three or four places worth planning a day around, and long stretches of road with nothing at all — so the useful skill here is knowing when the next kitchen is.
Tjöruhúsið, Ísafjörður
A fish restaurant in one of the eighteenth-century timber warehouses on the point, working from whatever the boats landed. The owners deliberately publish no menu and no hours — ring +354 456 4419 or message them to check they are open and to book a table.
Dokkan Brugghús, Ísafjörður
The first brewery in the Westfjords, at Sindragata 14 by the harbour. Taproom 11:00–23:00 every day, kitchen until 21:00, which makes it the most reliable hot food anywhere in the region.
Stúkuhúsið, Patreksfjörður
Aðalstræti 50, next to the swimming pool, looking down the fjord. Soup with fresh bread, home-made cake and espresso. Open 1 June to 1 September only, so it is the southern Westfjords' summer canteen and nothing at all in winter.
Eat when food appears, not when you are hungry
Stúkuhúsið runs June to September and the café at the Hnjótur museum May to September; between Patreksfjörður and Þingeyri there is effectively nothing. Carry lunch, and treat any open kitchen you pass as the last one for the next two hours.