Moronga, rellena, or morcilla is a 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...

 made of pig's blood. It is found in Cuba, Puerto Rico

Puerto Rico

Puerto Rico , officially the Commonwealth of Puerto Rico , is an unincorporated territory of the United States, located in the northeastern Caribbean, east of the Dominican Republic and west of both the United States Virgin Islands and the British Virgin Islands.Puerto Rico comprises an...

, Central America and Mexican cuisine

Mexican cuisine

Mexican cuisine, a style of food that originates in Mexico, is known for its varied flavors, colourful decoration and variety of spices and ingredients, most of which are native to the country. The cuisine of Mexico has evolved through thousands of years of blending indigenous cultures, with later...

. Spices, herbs (such as ruda, oregano, and mint), onions and chile peppers are added and then boiled in the pig's intestines for several hours. It is served in a sauce, either "chile rojo" or "chile verde". Considered a delicacy, it is also served in Mexico as a filling in gordita

Gordita

A gordita in Mexican cuisine is a corn cake made with masa harina and stuffed with cheese, meat or other fillings. It is similar to a pasty and to the Colombian/Venezuelan arepa. Gordita means "little fat one" in Spanish. A gordita is typically fried in a deep wok-shaped comal or baked on a...

s after it has been pan-fried with fresh onions and jalapeño peppers.