Crushed red pepper is made from hot dried red peppers and is not made of one type of chili, but from various combinations of ancho, bell

Bell pepper

Bell pepper, also known as sweet pepper or a pepper and capsicum , is a cultivar group of the species Capsicum annuum . Cultivars of the plant produce fruits in different colors, including red, yellow, orange and green. Bell peppers are sometimes grouped with less pungent pepper varieties as...

, cayenne

Cayenne pepper

The cayenne pepper—also known as the Guinea spice,cow-horn pepper, aleva, bird pepper,or, especially in its powdered form, red pepper—is a red, hot chili pepper used to flavor dishes and for medicinal purposes. Named for the city of Cayenne in French Guiana, it is a cultivar of Capsicum annuum...

 and other dried red peppers.. Crushed red pepper shakers have become as standard as salt and pepper on tables at Italian restaurant

Italian cuisine

Italian cuisine has developed through centuries of social and political changes, with roots as far back as the 4th century BCE. Italian cuisine in itself takes heavy influences, including Etruscan, ancient Greek, ancient Roman, Byzantine, Jewish and Arab cuisines...

s and especially pizza parlors in the United States. Often there is a high ratio of seeds

SEEDS

SEEDS is a voluntary organisation registered under the Societies Act of India....

, which intensifies the heat of this flavorful condiment. Crushed red pepper is used in pickling

Pickling

Pickling, also known as brining or corning is the process of preserving food by anaerobic fermentation in brine to produce lactic acid, or marinating and storing it in an acid solution, usually vinegar . The resulting food is called a pickle. This procedure gives the food a salty or sour taste...

, chowder

Chowder

In North America Chowder is a generic name for a wide variety of seafood or vegetable stews and thickened soups, often with milk or cream. Some varieties are traditionally thickened with crushed ship biscuit instead of flour, which is more usual...

s, gumbo

Gumbo

Gumbo is a stew or soup that originated in southern Louisiana during the 18th century. It consists primarily of a strongly-flavored stock, meat or shellfish, a thickener, and the vegetable holy trinity of celery, bell peppers, and onions...

s, spaghetti sauce, pizza sauce, soup

Soup

Soup is a generally warm food that is made by combining ingredients such as meat and vegetables with stock, juice, water, or another liquid. Hot soups are additionally characterized by boiling solid ingredients in liquids in a pot until the flavors are extracted, forming a broth.Traditionally,...

s and sausage

Sausage

A sausage is a food usually made from ground meat , mixed with salt, herbs, and other spices, although vegetarian sausages are available. The word sausage is derived from Old French saussiche, from the Latin word salsus, meaning salted.Typically, a sausage is formed in a casing traditionally made...

. As chilis have become more popular, the varieties of peppers used to make crushed red pepper has also changed.