Simple past tense and past participle of kipper.(verb)
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Use "kippered" in a sentence
"This kind of smoked fish—also sometimes called kippered salmon—can have a glossy, slightly sweet and chewy crust that gives way to succulent flesh beneath."
"Mechanical smoking kilns are used extensively in Europe and North America where the production of products such as kippered herring and buckling requires a high degree of control."
"Bring some kippered herring with some saltine crackers ... and oh man, I have a meal!"