1621
Their technique of stir frying a portion of food ingredients in a little cooking oil over high heat in a wok ( 锅 ) are widely adopted .
 food: cooking oil
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 food: cooking oil