How long does cereal, dry mixes last?
In the pantry, cereal, dry mixes keeps for 1 month after opening. Once opened, use it within 1 month.

1 month
after opening
No guideline
1 month
in the fridge unless noted
Does cereal, dry mixes go bad?
Cereal, dry mixes is shelf stable, so the pantry time is about quality rather than safety: past it, flavour and texture fade before anything becomes unsafe. The date on the package is the maker's quality promise; the times here count from purchase unless marked "from the package date".
Two numbers to keep in mind: a fridge at 40 F (4 C) or below, and no more than 2 hours at room temperature (1 hour above 90 F / 32 C) for anything perishable.
How cereal, dry mixes compares with other baby food
USDA FoodKeeper gives cereal, dry mixes one time: 1 month in the pantry after opening, and no figure for the other places. A blank usually means the food is not stored that way, not that the data is missing. The foods USDA lists next to cereal, dry mixes in baby food show the range for the group:
| Food | Pantry | Fridge | Freezer |
|---|---|---|---|
| Dinners | no guideline | no guideline | no guideline |
| Formula | no guideline | no guideline | no guideline |
| Fruit | no guideline | no guideline | no guideline |
| Jars or pouches | no guideline | no guideline | no guideline |
| Liquid concentrate or ready-to-feed formula | no guideline | no guideline | no guideline |
| Vegetables(first of 2 kinds) | no guideline | 3 to 4 days | 10 to 18 months |
About baby food. Baby food spoils quickly once opened because it lacks the preservatives found in many packaged foods, and jars or pouches should be treated as fresh food, not shelf stable. Unopened jars and pouches keep well until their date, but opened baby food needs prompt refrigeration and quick use. All baby food.
How to tell cereal, dry mixes has gone bad
General signs for baby food, the group USDA lists cereal, dry mixes under.
- Lid pops or bulges when you open the jar
- Sour or off smell instead of the usual mild scent
- Colour looks darker or duller than a fresh jar
- Watery separation that will not stir back together
- Mould spots on the surface or under the lid
More on baby food. The times above are quality guidelines, not safety limits; food that shows these signs goes out regardless of the date.
How long do other baby food last?
Source: USDA FSIS FoodKeeper dataset (public domain). How we decode the data.