used in preparing sushi in the country. also often contains a large amount of cream cheese and is extremely popular in restaurants. American-style Multiple-filling rolls inspired by are a more popular type of sushi within the United States and come in variations that take their names from their places of origin. Other rolls may include a variety of ingredients, including chopped scallops, spicy tuna, beef or chicken teriyaki roll, okra, and assorted vegetables such as cucumber and avocado, and the tempura roll, where shrimp tempura is inside the roll or the entire roll is battered and fried tempura-style. In the Southern United States, many sushi restaurants prepare rolls using crawfish. Sometimes, rolls are made with brown rice or black rice, known as forbidden rice, which appear in Japanese cuisine as well. Per Food and Drug Administration regulations, raw fish, served in the United States must be frozen before serving to kill parasites. Since rolls are often made to order, it is not unusual for the customer to specify the exact ingredients desired (e.g., salmon roll, cucumber roll, avocado roll, tuna roll, shrimp or tuna tempura roll, etc.). Though the menu names of dishes often vary by restaurant, some examples include the following: Canada Many of the styles seen in the United States are also seen in Canada and their own. Doshi (a portmanteau of sushi and donut) is a donut-shaped rice ball on a deep-fried crab or imitation crab cake topped with sushi ingredients. Maki Poutine is similar to in style except it is topped with cheese curds and gravy and contains duck confit, more cheese curds, and sweet potato tempura. Sushi cake is made of crab meat, avocado, shiitake mushroom, salmon, spicy tuna, and tobiko and served on sushi rice then torched with spicy mayo, BBQ sauce, balsamic reduction, and dotted with caper and garlic chips. Sushi pizza is deep fried rice or crab/imitation crab cake topped with mayo and various sushi ingredients. Mexico and the Western United States Sinaloan sushi originated in Sinaloa, Mexico and has been available in the Western United States since 2013. Sushi in Asia South Korea , similar to , is an internationally popular convenience food of Korean origin. It consists of (nori flavored with sesame oil and salt) rolled around rice and a variety of ingredients such as vegetables and meat. Ingredients All sushi has a base of specially prepared rice, complemented with