Testimonial by Paula Teixeira, professor and researcher in the field of food safety at the Faculty of Biotechnology at the Universidade Catolica in Porto.
The egg test is a technique that has been passed down from generation to generation, supposedly helping to understand whether eggs are fit to be consumed.
According to popular wisdom, if you put an egg in a bowl of water and it floats, it means it has gone bad. On the other hand, the same theory defends that when the egg does not float it is because it is good for consumption. But will it be so? Is an egg that doesn't float a guarantee of food safety?
Paula Teixeira leaves no room for doubt: the fact that an egg does not float when placed in a bowl of water “is not a guarantee that it is a safe egg”.
The specialist explains that the egg test can help to understand if an egg is fresh, but it is not enough to detect if it is contaminated.