Can potato salad with mayonnaise be kept overnight in a tin container?

It's not recommended to keep potato salad with mayonnaise in a tin container overnight. Here's why:

* Mayonnaise and Metal: Mayonnaise can react with the metal of a tin container, potentially altering its flavor or even leading to a metallic taste.

* Temperature Control: Tin containers don't offer the best insulation for keeping food cold, especially overnight. This increases the risk of bacteria growth, which can cause food poisoning.

* Safety: It's generally best practice to store perishable foods like potato salad in airtight containers made of glass or food-grade plastic in the refrigerator.

Instead of storing in a tin container, consider:

* Using a glass container: These are ideal for storing potato salad, as they won't affect the flavor and are easily cleaned.

* Using a food-grade plastic container: Ensure it's airtight and suitable for storing food in the refrigerator.

* Storing in the refrigerator: Keep the potato salad refrigerated at 40°F (4°C) or below.

Remember, it's always best to err on the side of caution when dealing with perishable foods. If you're unsure about the safety of any food, it's better to throw it away.