Egg Safety Temperature: Salmonella & Storage

Egg Safety: Cracking the Myths

Eggs are a staple, but they carry a notorious passenger: Salmonella Enteritidis. This bacteria can be on the shell or, surprisingly, inside the egg (infected before the shell was formed).

Safe Cooking Temperatures

• Scrambled/Omelets: Cook until firm. No liquid egg visible. Temp: 160°F71°C.
• Casseroles/Quiche: 160°F71°C.
• Poached/Fried: Cook until whites are completely set and yolks thicken.
• Hard Boiled: Safe.

What about Runny Yolks?

Sunny-side up or soft-poached eggs do not reach 160°F71°C.

• Risk: There is a persistent (though small) risk of Salmonella with runny yolks.
• Recommendation: High-risk groups (elderly, infants, pregnant women, immunocompromised) should avoid runny yolks. Everyone else usually accepts the small risk for the deliciousness.
• Pasteurized Eggs: If you rely on raw/runny eggs (like for Caesar dressing or homemade mayo), buy Pasteurized Eggs. They have been heat-treated to kill bacteria without cooking the egg.

Storage: Fridge vs. Counter

This depends on where you live.

USA / Canada (Refrigerate!)

• Why: Commercial eggs are washed to remove dirt/poop. This washing removes naturally protective coating (cuticle).
• Result: The shell is porous. Bacteria can enter. You MUST refrigerate washed eggs.

Europe / UK (Counter is okay)

• Why: Eggs are legally not allowed to be washed. The cuticle remains intact, sealing the egg.
• Result: They are safe at room temp (though they last longer in the fridge).

The Float Test

How to tell if an egg is bad without cracking it?

1. Fill a glass with water.
2. Drop the egg in.

• Sinks flat: Fresh.
• Stands up: Older, but fine.
• Floats: Rotten. Gas has built up inside from decomposition. Throw it away.

Frequently Asked Questions (FAQ)

Q: Can I eat raw cookie dough?

A: The risk is twofold: Raw Eggs (Salmonella) and Raw Flour (E. coli). Yes, raw flour is a major safety hazard. Eat dough only if it says "Edible" (heat-treated flour + pasteurized eggs).

Q: How long do hard-boiled eggs last?

A: 1 week in the fridge (shell on or off).

Q: Why is my yolk green?

A: Overcooking. The Sulfur in the white reacts with Iron in the yolk to create a harmless (but ugly) green ring. Boil for less time and cool immediately in ice water.