In the freezer
1 month
Yes, short term
Quality holds for about 1 month at 0°F / -18°C. Frozen food stays safe indefinitely; only quality declines.
Quick answer
Yes: pesto keeps 1 month in the freezer at 0°F (-18°C), compared with 3 days in the fridge.
How to freeze pesto
- Most condiments keep well in the fridge and do not need freezing.
- If freezing, use ice-cube trays or small containers and label them.
- Thaw in the fridge and stir well; emulsions may separate.
How to thaw pesto
In the fridge
Move it to the fridge the night before; this keeps texture best.
At room temperature
Only for shelf-stable items; perishable food should not thaw on the counter.
From frozen
Many foods can go straight into soups, sauces, smoothies or the oven.
Yes, short termQuality holds for about 1 month at 0°F / -18°C. Frozen food stays safe indefinitely; only quality declines.
Freezer vs fridge vs counter
Per USDA FoodKeeper
On the counterCounter
Refrigerate
once opened
In the fridgeFridge
3 days
at or below 40°F (4°C)
In the freezerFreezer
1 month
at 0°F; quality, not safety
On the counterCounter
Not recommended
keep it cold
In the fridgeFridge
6 months
at or below 40°F (4°C)
In the freezerFreezer
1 month
at 0°F; quality, not safety
More about pesto
FAQ
How long can you freeze pesto?
About 1 month for best quality at 0°F (-18°C). Kept frozen, it stays safe longer, but texture and flavour fade.
How do you thaw frozen pesto?
Move it to the fridge the night before; this keeps texture best.
Can you refreeze pesto?
Only if it was thawed in the fridge and has not been left out. Quality drops each time.
Does freezing kill bacteria in pesto?
No. Freezing pauses bacteria; they become active again as the food thaws. Cook or reheat to a safe temperature.
Numbers on this page come from USDA FoodKeeper and FSIS guidance. Last verified November 2026. How we verify our data · Report a wrong number