Cajun cuisine developed mainly in which U.S. state?

Cajun cuisine developed mainly in Louisiana. It emerged among the Cajuns, descendants of French-speaking Acadians who resettled in southern Louisiana after the 18th-century deportation known as the Great Expulsion, or le Grand Dérangement.

The newcomers adapted their cooking to Louisiana's climate, wetlands, prairies, and available ingredients. Their foodways incorporated French traditions along with Native American, West African, Spanish, and later Caribbean influences. Rice, pork, seafood, game, corn, okra, and locally grown vegetables became important ingredients, while one-pot cooking suited rural households and available resources.

A classic Cajun flavor base is the “holy trinity” of onion, celery, and green bell pepper, often used alongside a roux. Gumbo, jambalaya, étouffée, boudin, and andouille are among the dishes associated with Louisiana cooking, although individual recipes vary by region and family.

Cajun and Creole cuisine are related but not identical. Cajun cooking developed largely in rural Acadiana, while Creole cooking is historically associated with New Orleans and broader urban influences. Both are Louisiana traditions, which is why the state is the fair single answer.