If a hard boiled egg is bad will it taste bad?

Yes, a hard-boiled egg that has gone bad will definitely taste bad. Here's why:

* Sulfur Smell: The most obvious sign is a strong sulfurous smell, similar to rotten eggs.

* Green Yolk: The yolk may turn green, which is caused by the breakdown of iron in the yolk reacting with hydrogen sulfide.

* Slimy Texture: The white may become slimy and the yolk might have a mushy texture.

* Off-Flavors: The taste will be unpleasant, ranging from slightly sour to distinctly rotten.

Important Note: If you even suspect an egg might be bad, don't eat it! Even if it doesn't taste noticeably bad, it could still contain harmful bacteria.

How to tell if a hard-boiled egg is good:

* Smell: A fresh egg should have no odor.

* Appearance: The shell should be intact, and the yolk should be yellow or light orange.

* Texture: The white should be firm, not runny or slimy.

If you have any doubts, it's always better to err on the side of caution and throw the egg away.