Eggnog
The answer
Opened commercial eggnog lasts 3–5 days in the fridge. Keep it cold — it contains eggs and dairy.
Caution Refrigerate promptly after opening. Follow the package date if it is shorter.
How long it keeps
Fridge (40°F) 3–5 days (opened) safe window
Freezer (0°F) Does not freeze well best quality
Room temp 2 hours max then discard
Discard Discard if held above 40°F for more than 2 hours, or above 90°F for more than 1 hour.
The answer
Homemade eggnog lasts 2–4 days in the fridge. It does not freeze well.
Caution Homemade eggnog with raw eggs is a higher risk — use pasteurized eggs if serving to vulnerable guests.
How long it keeps
Fridge (40°F) 2–4 days safe window
Freezer (0°F) Does not freeze well best quality
Room temp 2 hours max then discard
Discard Discard if held above 40°F for more than 2 hours, or above 90°F for more than 1 hour.
By state & packaging
State Fridge Freezer
Commercial, opened 3–5 days Does not freeze well
Homemade 2–4 days Does not freeze well
Unopened commercial Printed date Does not freeze well
Signs it has gone bad
✕ Sour or curdled texture
✕ Off or boozy smell
✕ Separation with foul odor
FAQ
Is eggnog still good after a week?
No. Opened commercial eggnog lasts 3–5 days; homemade 2–4 days. Discard it.