How long does duck fat last?
In the fridge, duck fat keeps for 30 days from purchase.
No guideline
30 days
from purchase
No guideline
Does duck fat go bad?
Yes. The fridge time above is the window USDA gives for good quality; after it, duck fat may still be safe for a short while but quality drops and spoilage signs start. 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 duck fat compares with other condiments, sauces & canned goods
USDA FoodKeeper gives duck fat one time: 30 days in the fridge from purchase, 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 duck fat in condiments, sauces & canned goods show the range for the group:
| Food | Pantry | Fridge | Freezer |
|---|---|---|---|
| Chutney | 1 year | no guideline | no guideline |
| Cooking wine | Use by the package date | Use by the package date | no guideline |
| Cranberry sauce(first of 2 kinds) | 2 years | no guideline | no guideline |
| Cream sauces, milk solids | 6 to 12 months | no guideline | no guideline |
| Dry gravy mixes | 2 years | 1 to 2 days | no guideline |
| Frying oil | no guideline | 1 month | 6 to 9 months |
| Gravy | 2 to 5 years | no guideline | no guideline |
| Hoisin sauce | 18 to 24 months | no guideline | no guideline |
| Honey | 2 years | no guideline | no guideline |
| Horseradish | no guideline | 12 months | no guideline |
About condiments, sauces & canned goods. Many condiments last for months in the fridge after opening because of their salt, sugar, vinegar or oil content, though quality fades before safety does. Canned goods are shelf stable for years unopened, but the can itself needs checking before use. All condiments, sauces & canned goods.
How to tell duck fat has gone bad
General signs for condiments, sauces & canned goods, the group USDA lists duck fat under.
- Dented, bulging or rusted cans, especially at the seams
- Hissing sound or spray when a can or jar is opened
- Mould on the surface of a sauce or condiment
- Separation, discoloration or a sharp off smell from the jar
- Metallic taste or cloudy liquid in canned food
More on condiments, sauces & canned goods. The times above are quality guidelines, not safety limits; food that shows these signs goes out regardless of the date.
How long do other condiments, sauces & canned goods last?
Source: USDA FSIS FoodKeeper dataset (public domain). How we decode the data.