A milkshake should not sit out at room temperature for more than two hours.
According to the Food and Drug Administration (FDA), most perishable foods, including milk-based drinks like milkshakes, should not be left out of the refrigerator for more than two hours. This time limit is even shorter if the room temperature is warm.
Why is Two Hours the Limit?
Bacteria grow rapidly in perishable foods at room temperature. This growth can lead to foodborne illnesses. Leaving a milkshake out for longer than two hours increases the risk of harmful bacteria multiplying to dangerous levels.
Factors Affecting the Time Limit
- Room Temperature: If the room is particularly warm, reduce the time the milkshake sits out. In hotter environments, bacteria multiply more rapidly.
- Ingredients: Milkshakes often contain dairy products, which are highly perishable. Ingredients like whipped cream, ice cream, and other dairy elements further increase the chances of rapid bacterial growth.
Practical Tips
To avoid foodborne illness, follow these tips:
- Consume Quickly: Drink your milkshake as soon as possible after preparation.
- Refrigerate Promptly: If you can't finish the milkshake immediately, place it in the refrigerator within two hours.
- Discard After Two Hours: If a milkshake has been sitting out for more than two hours, discard it rather than consuming it.
What About Hot Weather?
In hot weather, the two-hour rule might not be sufficient, so consume the milkshake even sooner.
Table of Time Limits
| Condition | Maximum Time Out |
|---|---|
| Room Temperature | 2 Hours |
| Hot Room Temperature | Less Than 2 Hours |
Leaving a milkshake out for more than two hours could lead to stomach upset or other symptoms of food poisoning. It is always better to err on the side of caution and discard any milkshake that has been out too long.
