Racks of haddock in a homemade smoker. Smouldering at the bottom are hardwood wood chips. The sacking at the back is used to cover the racks while they are smoked.
Smoked fish are fish that have been cured by smoking.
Foods have been smoked by humans throughout history. At first this was done as a preservative. Now the smoking of fish is generally done for the unique taste and flavour that comes from the smoking process.