More than 1 million tons of whey worth 200.5 billion rials ($6.12 million) were imported into Iran from seven countries during the last fiscal year (March 2017-18), data released by the Islamic Republic of Iran Customs Administration show. With over $3.2 million, China was the biggest exporter of the product to the country followed by Germany, Turkey, the UAE, Ireland, the Netherlands and Denmark, Mizan Online news agency reported.
Whey is the liquid remaining after milk has been curdled and strained. It is a byproduct of the manufacture of cheese or casein and has several commercial uses. Sweet whey is a byproduct produced during the manufacture of rennet types of hard cheese, like Cheddar. Acid whey (also known as sour whey) is a byproduct of making acidic types of dairy products, such as cottage cheese or strained yogurt.