Less controlled acidity
No preservatives
Because of this, it carries a higher risk of bacterial contamination.
That’s why homemade mayo should always be refrigerated and consumed relatively quickly.
The Real Risk: Not the Mayo—But What’s Mixed With It
Here’s something many people don’t realize:
Mayonnaise alone is rarely the problem.
The real risk comes when it’s mixed with other ingredients.
For example:
Chicken salad
Tuna salad
Potato salad
These foods can support bacterial growth more easily, especially when left out at room temperature.
Bacteria like Staphylococcus Aureus Infection can grow rapidly in these conditions.
The “2-Hour Rule” Explained
Food safety guidelines often recommend:
Do not leave perishable foods out for more than 2 hours
If the temperature is above 32°C (90°F), limit it to 1 hour
