Blackening is a cooking technique commonly used in the preparation of fish

Fish (food)

Fish is a food consumed by many species, including humans. The word "fish" refers to both the animal and to the food prepared from it. Fish has been an important source of protein for humans throughout recorded history.-Terminology:...

 and other foods. Often associated with traditional Cajun cuisine

Cajun cuisine

Cajun cuisine is the style of cooking named for the French-speaking Acadian or "Cajun" immigrants deported by the British from Acadia in Canada to the Acadiana region of Louisiana, USA. It is what could be called a rustic cuisine — locally available ingredients predominate, and preparation...

, this technique was popularized by chef

Chef

A chef is a person who cooks professionally for other people. Although over time the term has come to describe any person who cooks for a living, traditionally it refers to a highly skilled professional who is proficient in all aspects of food preparation.-Etymology:The word "chef" is borrowed ...

 Paul Prudhomme

Paul Prudhomme

Paul Prudhomme is an American celebrity chef whose specialty is Cajun cuisine. He is also the owner of one of the top restaurants in New Orleans, K-Paul's Louisiana Kitchen.-Early life:...

. The food is dipped in melted butter and then dredged in a mixture of herb

Herb

Except in botanical usage, an herb is "any plant with leaves, seeds, or flowers used for flavoring, food, medicine, or perfume" or "a part of such a plant as used in cooking"...

s and spice

Spice

A spice is a dried seed, fruit, root, bark, or vegetative substance used in nutritionally insignificant quantities as a food additive for flavor, color, or as a preservative that kills harmful bacteria or prevents their growth. It may be used to flavour a dish or to hide other flavours...

s, usually some combination of thyme

Thyme

Thyme is a culinary and medicinal herb of the genus Thymus.-History:Ancient Egyptians used thyme for embalming. The ancient Greeks used it in their baths and burnt it as incense in their temples, believing it was a source of courage...

, oregano

Oregano

Oregano – scientifically named Origanum vulgare by Carolus Linnaeus – is a common species of Origanum, a genus of the mint family . It is native to warm-temperate western and southwestern Eurasia and the Mediterranean region.Oregano is a perennial herb, growing from 20–80 cm tall,...

, chili pepper

Chili pepper

Chili pepper is the fruit of plants from the genus Capsicum, members of the nightshade family, Solanaceae. The term in British English and in Australia, New Zealand, India, Malaysia and other Asian countries is just chilli without pepper.Chili peppers originated in the Americas...

, peppercorns, salt

Salt

In chemistry, salts are ionic compounds that result from the neutralization reaction of an acid and a base. They are composed of cations and anions so that the product is electrically neutral...

, garlic powder and onion powder. It is then cooked in a very hot cast-iron skillet.

The characteristic brown-black color of the crust results from a combination of browned milk solids from the butter and charred spices.

While the original recipe calls for redfish

Red Drum

The Red Drum , also known as Channel Bass, Redfish, Spottail Bass or simply Reds, is a game fish that is found in the Atlantic Ocean from Massachusetts to Florida and in the Gulf of Mexico from Florida to Northern Mexico. It is the only species in the genus Sciaenops...

, the same method of preparation can be applied to other types of fish and other protein sources, such as steak or chicken cutlets.