Mayonnaise separates when frozen, and the oil and water do not come back together. It stays safe, but it is not worth eating.
NDSU’s freezing guide lists mayonnaise and cooked egg or cream-based dressings among the foods that separate when frozen alone, and it says mayonnaise tends to separate in sandwiches. It is an emulsion of oil and water, and ice crystals break it.
| Short answer | No |
|---|---|
| Why | The emulsion breaks and separates |
| Also affected | Cooked egg or cream-based dressings |
| In sandwiches | Mayonnaise tends to separate |
| Workaround | Freeze the dish without it and add it after thawing |
What to do instead of freezing it
- Keep the jar in the refrigerator once opened.
- If a recipe has mayonnaise, leave it out of the portion you plan to freeze.
- Freeze the rest of the dish and add fresh mayonnaise after thawing.
- Use a different spread or a little butter on sandwiches you plan to freeze.
- Discard mayonnaise that has separated after freezing, rather than trying to rescue it.
What happens when you get it wrong
- Separated oil. Thawed mayonnaise is thin, curdled and greasy.
- Ruined dishes. Salads and casseroles with mayonnaise in them turn watery and split.
- Soggy sandwiches. Mayonnaise soaks into the bread and separates on thawing.
Freeze the other ingredients and mix in mayonnaise at serving time.
Buy a small jar if you use it slowly.
Frequently asked questions
Can you freeze mayonnaise?
You can, but it separates and the texture does not come back.
Can you freeze potato salad or tuna salad?
They contain mayonnaise, so they separate. Freeze the base and add the dressing after thawing.
Is frozen mayonnaise safe?
It stays safe at 0 F, but the texture is the problem.
Can you freeze sandwiches with mayonnaise?
NDSU notes mayonnaise tends to separate in sandwiches, so spread it on after thawing.