Milk is one of the most common household staples around the world, but have you ever heard of bagged milk? While this may sound strange to some, bagged milk is a common way to package milk in certain parts of the world. In this article, we will explore the history, function, and safety of bagged milk.
What is Bagged Milk?

Bagged milk is a method of packaging milk that involves filling plastic bags with milk instead of using traditional plastic or glass containers. The bags are typically made of high-density polyethylene (HDPE) and can hold up to three liters of milk. The bags are then placed into a plastic pitcher or jug with a spout for pouring.
Who Invented Bagged Milk, and When?
Bagged milk was first invented in 1967 by a Swedish company named Laval. The company began using the innovative packaging system in Canada in the early 1970s. In Canada, bagged milk is now widely used, especially in Ontario, Quebec, and Atlantic Canada.
Why Was Bagged Milk Invented?
Bagged milk was invented as a more cost-effective way to package milk. It is cheaper to produce bags than traditional milk containers, and it takes up less space during transportation, leading to reduced transportation costs. Bagged milk is also said to be more environmentally friendly because it produces less waste than traditional milk packaging.
How Does Bagged Milk Work?
Bagged milk is designed to work with a specific pitcher or jug with a spout for pouring. The bag is inserted into the pitcher, and the spout is placed through a hole in the top of the bag. The bag is then sealed with a twist tie or clip to prevent air from getting in and spoiling the milk. When you’re ready to use the milk, you cut off the corner of the bag and pour it out of the spout.
How Long Does Bagged Milk Last?
Bagged milk has a similar shelf life to traditional milk packaging. It can last up to seven days after opening if kept refrigerated and properly sealed. It is important to note that once the bag is opened, the milk should be consumed within a few days.
Who Drinks Bagged Milk?
Bagged milk is most commonly used in Canada, particularly in Ontario, Quebec, and Atlantic Canada. It is also used in some parts of Europe, such as the United Kingdom and Scandinavia.
Is Bagged Milk More Environmentally Friendly?
Bagged milk is often touted as a more environmentally friendly option compared to traditional milk packaging. It produces less waste and takes up less space during transportation, which reduces transportation costs and emissions. However, the environmental impact of bagged milk also depends on the disposal method of the bags, as they are not always recyclable.
Is Packaged Milk Safe?
Packaged milk is generally safe to consume as long as it is properly stored and not expired. However, like all food products, it is important to follow proper food handling and storage procedures to prevent contamination and spoilage.
Does Packaged Milk Contain Preservatives?
Packaged milk does not always contain preservatives. Some types of milk, such as ultra-high-temperature (UHT) milk, are heat-treated to extend their shelf life without the need for preservatives. However, some types of packaged milk may contain preservatives to prevent spoilage and increase shelf life. It is important to read the label and understand the ingredients of any packaged milk product before consuming it.
In conclusion, bagged milk is an innovative and cost-effective way to package milk that has gained popularity in certain parts of the world. While it has its advantages, it is important to understand the proper use and disposal of the bags to minimize its impact on the environment.