Chopped liver is a spread

Spread (food)

A spread is a food that is spread with a knife onto bread, crackers, or other bread products. Spreads are added to bread products to provide flavor and texture, and are an integral part of the dish, i.e. they should be distinguished from condiments, which are optional additions...

 popular in Jewish cuisine

Jewish cuisine

Jewish Cuisine is a collection of the different cooking traditions of the Jewish people worldwide. It is a diverse cuisine that has evolved over many centuries, shaped by Jewish dietary laws and Jewish Festival and Sabbath traditions...

.

It is often made by sautéeing or broiling liver

Liver (food)

The liver of mammals, fowl, and fish are commonly eaten as food by humans. Domestic pig, ox, lamb, calf, chicken, and goose livers are widely available from butchers and supermarkets....

 and onion

Onion

The onion , also known as the bulb onion, common onion and garden onion, is the most widely cultivated species of the genus Allium. The genus Allium also contains a number of other species variously referred to as onions and cultivated for food, such as the Japanese bunching onion The onion...

s in schmaltz

Schmaltz

Schmaltz or schmalz is rendered chicken, goose, or pork fat used for frying or as a spread on bread, especially in German and Ashkenazi Jewish cuisine. Also is very common in Ukrainian cuisine Schmaltz or schmalz is rendered chicken, goose, or pork fat used for frying or as a spread on bread,...

; adding hard-boiled eggs

Egg (food)

Eggs are laid by females of many different species, including birds, reptiles, amphibians, and fish, and have probably been eaten by mankind for millennia. Bird and reptile eggs consist of a protective eggshell, albumen , and vitellus , contained within various thin membranes...

, 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...

 and pepper

Black pepper

Black pepper is a flowering vine in the family Piperaceae, cultivated for its fruit, which is usually dried and used as a spice and seasoning. The fruit, known as a peppercorn when dried, is approximately in diameter, dark red when fully mature, and, like all drupes, contains a single seed...

, and grinding that mixture. However, other methods and materials exist, and the exact process and ingredients may vary from chef to chef.

Chopped liver is a common menu item in kosher delicatessen

Delicatessen

Delicatessen is a term meaning "delicacies" or "fine foods". The word entered English via German,with the old German spelling , plural of Delikatesse "delicacy", ultimately from Latin delicatus....

s in Britain

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

, Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

, and the U.S.A. Chopped liver is often served with rye bread

Rye bread

Rye bread is a type of bread made with various percentages of flour from rye grain. It can be light or dark in color, depending on the type of flour used and the addition of coloring agents, and is typically denser than bread made from wheat flour...

 as sandwich

Sandwich

A sandwich is a food item, typically consisting of two or more slices of :bread with one or more fillings between them, or one slice of bread with a topping or toppings, commonly called an open sandwich. Sandwiches are a widely popular type of lunch food, typically taken to work or school, or...

es.

The liver used is generally calf, beef, or chicken. Shortening

Shortening

Shortening is any fat that is solid at room temperature and used to make crumbly pastry. The reason it is called shortening is because it prevents cross-linkage between gluten molecules. Cross linking is what causes doughs to be sticky. Seeing as cake is not meant to be sticky, shortening is used...

 or oil

Oil

An oil is any substance that is liquid at ambient temperatures and does not mix with water but may mix with other oils and organic solvents. This general definition includes vegetable oils, volatile essential oils, petrochemical oils, and synthetic oils....

 is often substituted for the schmaltz.

Variations

Chopped liver is high in protein

Protein

Proteins are biochemical compounds consisting of one or more polypeptides typically folded into a globular or fibrous form, facilitating a biological function. A polypeptide is a single linear polymer chain of amino acids bonded together by peptide bonds between the carboxyl and amino groups of...

 but also high in fat

Fat

Fats consist of a wide group of compounds that are generally soluble in organic solvents and generally insoluble in water. Chemically, fats are triglycerides, triesters of glycerol and any of several fatty acids. Fats may be either solid or liquid at room temperature, depending on their structure...

 and cholesterol

Cholesterol

Cholesterol is a complex isoprenoid. Specifically, it is a waxy steroid of fat that is produced in the liver or intestines. It is used to produce hormones and cell membranes and is transported in the blood plasma of all mammals. It is an essential structural component of mammalian cell membranes...

. Thus, low fat, mock

Meat analogue

A meat analogue, also called a meat substitute, mock meat, faux meat, or imitation meat, approximates the aesthetic qualities and/or chemical characteristics of specific types of meat...

, and vegetarian versions of chopped liver exist that are frequently made of a combination or base of peas, string beans, eggplant, or mushrooms.

Chopped liver as an expression

Since eating chopped liver may not be appreciated by everyone, the Jewish English expression "What am I, chopped liver?", signifies frustration or anger at being ignored on a social level.

An alternate explanation for the etymology of the "What am I, chopped liver?" expression is that chopped liver was traditionally served as a side dish rather than a main course. The phrase, therefore may have originally meant to express a feeling of being overlooked, as a "side dish."