Mayonnaise — commercial: Does it expire?
YES — Unopened: pantry 3–6 months • Opened: refrigerate 2 months
Related searches:
| Storage | Unopened | Opened |
|---|---|---|
| Pantry | 3–6 months | — |
| Refrigerator | — | 2 months |
- Refrigeration ensures that commercial sauces and condiments stay fresh for a longer period of time. Shelf-stable commercial mayonnaise is safe when stored at room temperature after opening. Quality, not safety, is the reason the labels on these products suggest that they be refrigerated after opening.
Sources & safety note
Sources: USDA FoodKeeper (CC0 open data). Freezer safety note: commercially frozen foods are safe indefinitely at 0°F (-18°C); posted times reflect best quality.
New to this? See our storage & safety guide for quick best practices.