Why Do They Sell Room Temperature Jugs of Milk in Mexico at Costco and Sam’s Club?

Introduction

Have you ever wondered why room temperature jugs of milk are sold in Costco and Sam’s Club in Mexico? This peculiar phenomenon intriguingly highlights the unique approach to milk pasteurization and distribution in a country like Mexico. This article delves into why and how this method works, exploring the key differences between UHT and traditional pasteurization methods.

Understanding UHT Milk

UHT (Ultra-High Temperature Pasteurization) milk is a technology that involves heating the milk to a very high temperature, typically between 280°F and 302°F (138°C to 150°C) for a short duration, ranging from just a second to a few seconds. This process effectively destroys all harmful bacteria and microorganisms present in the milk, rendering it safe for extended storage without refrigeration when unopened.

Compared to Traditional Pasteurization

In contrast, traditional pasteurization, commonly used in the US and Canada, involves heating milk to 161°F to 167°F (71.6°C to 75°C) for 15–20 seconds. While this method is effective, it does not entirely eliminate all bacteria, necessitating refrigeration to ensure the milk remains safe and preserves its quality.

Popular in Mexico but Not in the USA

UHT milk can be found in various retail settings in Mexico, ranging from large supermarkets like Costco and Sam’s Club to small local grocery stores and convenience stores. Furthermore, this method of pasteurization is widely adopted in Europe. The question often arises as to why the USA has not yet embraced UHT for milk.

Government Initiatives for Milk Safety

The Mexican government is making efforts to upgrade its milk processing to UHT to reduce refrigeration costs and improve milk safety. Even brands like Liconsa (a major Mexican dairy company) are transitioning to UHT milk.

Benefits of UHT Milk

UHT milk packaged in airtight and light-sealed containers like tetra bricks can be stored at room temperature for up to six months. Once opened, however, like any other milk, it will need to be refrigerated to prevent spoilage. This feature makes UHT milk quite convenient, as it allows for extended storage without the need for frequent trips to the grocery store.

Consumer Experience

UHT milk has gained popularity among consumers for its convenience and unique flavor. Despite the short-term high-temperature treatment, UHT milk is often described as more creamy and slightly sweet, making it a desirable alternative to traditionally pasteurized milk.

Conclusion

The sale of room temperature jugs of milk in Mexico at Costco and Sam’s Club is a testament to the advancements in milk pasteurization technology. UHT milk offers significant advantages in terms of convenience, shelf life, and cost-effectiveness. As the demand for such products grows, it is likely that we will see more regions adopt UHT milk, enhancing both the safety and availability of milk products worldwide.