An Asian supermarket is a category of grocery stores in Western countries that stocks items imported from the multiple countries in East, South and Southeast Asia. Supermarkets in Asia generally (except for the Middle East) have no equivalent to the "Asian" supermarkets of the West, foodstuffs in each respective Asian country have vastly different regulations and supply chains from one another, they are localized for each countries' tastes and only carry locally approved items for that market. Examples of this: seaweed snacks, originate in Japan where they are salty or savory, in Thailand they are often spicy and locally produced.
Asian supermarkets carry items and ingredients generally well-suited for Asian cuisines and simply not found or considerably more expensive in most Western supermarkets (due to low turnover and small quantities).
The Asian market category is a local food store to primarily cater to a single particular Asian cultural group, but additionally caters to other immigrant groups who do not have easy access to foodstuffs from their country of origin. These markets go farther than a typical market in that they sell quintessential general merchandise, goods, and services related to specific Asian countries of origin and immigrant communities. They are prevalent in Asian enclaves in the United States and Canada. Urban centers such as New York City, Los Angeles, Washington, D.C., San Diego, Chicago, Houston, Dallas, Atlanta, San Francisco, Philadelphia, and Seattle have Chinatowns, Little Indias, Little Saigons, Koreatowns, or Japantowns and other ethnic neighborhoods with specialty small business, but surrounding areas or smaller cities will have Asian supermarkets providing the same but reduced amenities for the same purposes.