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There exists a degree of uncertainty how to define a food and how to define a liquid. For example, are yogurt, jello and pudding considered liquids or foods? What about ice cream or ices?
This issue is critical in determining when a brachah achronah should be recited on the earlier mentioned foods. If they are considered food, the volume of an olive must be consumed to require a brachah achronah but as a liquid the quantity that necessitates a brachah achronah would be the volume of a revi’is.
According to the above guidelines, it would seem that a raw egg should certainly be considered a liquid since it is neither chewed nor sucked. Nonetheless, there are a number of Poskim who maintain that a raw egg is considered a food rather than a liquid.
One proof is our Gemara, which equates a raw egg and a fruit as a food rather than a liquid.
We explore the science behind the change from liquid to solid eggs.