Store-bought oat milk typically lasts for varying periods depending on whether it's refrigerated, shelf-stable, or frozen.
Shelf Life of Oat Milk: A Detailed Look
The duration oat milk remains safe to consume depends primarily on its processing and whether it has been opened. Understanding these factors helps in storing it correctly and maximizing its shelf life.
Refrigerated Oat Milk
Once opened, or if purchased from the refrigerated section, oat milk's lifespan is shorter.
- In the refrigerator: Store-bought oat milk will last for about 2-3 weeks in the refrigerator.
- Past the printed expiration date: It can also last about 5-7 days past the printed expiration date if stored properly.
Shelf-Stable Oat Milk (Unopened)
Unopened shelf-stable oat milk, often found in the ambient aisles, undergoes Ultra-High Temperature (UHT) processing, giving it a significantly longer shelf life before opening.
- According to Tamayo, as noted in a reference from November 17, 2022, “Shelf-stable oat milk can last unopened for at least 6 months,” if not more.
Freezing Oat Milk
For longer storage, oat milk can be frozen, although this can sometimes affect its texture.
- Oat milk can last up to 6 months in the freezer.
Oat Milk Shelf Life Summary Table
| Type of Oat Milk | State | Duration |
|---|---|---|
| Store-bought (Refrigerated Section) | Opened/Unopened (in fridge) | About 2-3 weeks in the refrigerator |
| Store-bought (Refrigerated Section) | In fridge | About 5-7 days past expiration date |
| Shelf-Stable (Unopened) | Unopened | At least 6 months, if not more |
| Store-bought (suitable for freezing) | Frozen | Up to 6 months in the freezer |
Practical Storage Tips
To ensure your oat milk stays fresh for as long as possible:
- Always refrigerate oat milk immediately after opening, regardless of whether it was originally shelf-stable or refrigerated.
- Store it in the main body of the refrigerator, not the door, where temperatures fluctuate more.
- Check for signs of spoilage before consuming, such as a sour smell, curdled texture, or off-color.
