precooked       
adjective uk/ˌpriːˈkʊkt/ us/ˌpriːˈkʊkt/
 (食物)预制的,已煮熟的
(of food) cooked before it is needed so that it can be heated and then eaten at a later time
  Sales of precooked meals have risen sharply over the past few years. 在过去的几年里,熟食的销售量急剧上升。 
 The company sells precooked rice in a pouch. 这家公司用袋装方式出售已煮熟的米饭。 
 See: precook
 - More examples
 - He thinks soaking and cooking dried beans is far tastier than eating precooked canned beans.
 - Instant noodles are dried or precooked noodles fused with oil, and often sold with a packet of flavoring.
 - Don't buy precooked shrimp; they will end up overcooked in your dishes.