Eggnog with alcohol added can safely last in the refrigerator for 1-2 weeks. The shelf life depends on the alcohol content and how it is stored.
How Long Does Non-Alcoholic Eggnog Last?
Plain, non-alcoholic eggnog will generally last 7-10 days past its “best by” date if kept refrigerated and unopened. Once opened, it should be used within 5-7 days. The high fat and dairy content means it can spoil relatively quickly compared to other beverages.
Alcohol Extends Shelf Life
Adding alcohol like rum, brandy, or bourbon helps extend eggnog’s shelf life. The alcohol acts as a preservative, preventing bacterial growth. An unopened carton of alcoholic eggnog can last:
- 3-4 weeks past its “best by” date if refrigerated
- 2-3 months frozen
Once opened, it will stay fresh for 1-2 weeks in the fridge depending on alcohol content.
Higher Alcohol Content = Longer Lasting
The more alcohol in the eggnog, the longer it will last. Here are some general guidelines:
| Alcohol Content | Fridge Life Once Opened |
|---|---|
| Lightly spiked (5-10% alcohol) | 1 week |
| Moderately spiked (10-20% alcohol) | 2 weeks |
| Heavily spiked (Over 20% alcohol) | 2-3 weeks |
As a rule of thumb, eggnog made with 1 part liquor and 2-3 parts eggnog will have enough alcohol to maximize shelf life.
How to Tell if Eggnog Has Gone Bad
Signs that eggnog has spoiled and should be discarded:
- Sour, curdled, or lump consistency
- Mold growing on surface
- Off odors
- Flat or bubbly appearance
If there are any changes in texture, smell, or appearance, err on the side of caution and throw it out. With homemade eggnog, you may notice it separating with the alcohol sinking to the bottom—this is normal and it can be reshaken.
Storing Eggnog Properly
To get the longest shelf life out of eggnog with alcohol:
- Refrigerate at 40°F or below immediately after purchase or making
- Keep tightly sealed when not in use
- Store away from light, heat sources, and temperature fluctuations
- Avoid introducing contaminants by using clean utensils
You can also portion eggnog into smaller containers to limit exposure each time it’s opened.
Freezing Eggnog
Freezing is a great way to extend the shelf life even further. Eggnog with alcohol can usually last 2-3 months frozen. To freeze:
- Pour eggnog into airtight containers, leaving 1 inch of headspace
- Let chill in the refrigerator first for faster freezing
- Freeze at 0°F or below
- Thaw in the refrigerator when ready to use
The high fat content means eggnog holds up well in the freezer. The texture may be slightly thicker after thawing but shaking will blend it back together. The alcohol may also separate but can be remixed in.
Can You Freeze Alcoholic Eggnog Bought at the Store?
Yes, store-bought eggnog with alcohol can be frozen too. Make sure it is placed in the freezer by the “best by” date and kept frozen for no more than 2-3 months.
Conclusion
The shelf life of eggnog spikes up to 1-2 weeks when alcohol is added, compared to just 5-7 days for non-alcoholic. Keeping it refrigerated, sealed, and free of contaminants are the keys to maximizing freshness. Heavy liquor concentrations of over 20% alcohol will preserve eggnog the longest. Freezing can extend the shelf life even further to 2-3 months. With proper storage methods, you can enjoy eggnog with rum, brandy, or bourbon for weeks during the holiday season.