3. Do Not Use the Broken Shell to Separate the Yolk From The Egg White:

This is also a practice that you surely take for granted without knowing that it is a mistake: how many times have you used the shell separated in half to separate the yolk from the white? The problem is always the same and concerns the possible bacterial contamination from the outside to the inside of the egg. In reality, not using the shell to separate the two parts of the egg is easier than you think, you just have to use the “funnel trick”: when you break your egg, pour it into a funnel with a narrow mouth and you will see how, due to the different weight of the two elements, the white will slide into the bowl below, while the yolk will remain stuck in the concave part without coming down.
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