We each have grapefruit for breakfast, which I fix (I fix the whole breakfast, she fixes lunch). Both look exactly the same. I cut them in half. I put half of each grapefruit on each plate.
If one is good and one is poor, and I can’t tell the difference, my wife gets at least half of a good grapefruit. I do not risk her getting 100% of a poor grapefruit.
I wash the grapefruit, and my hands, with soap and water before cutting them.
Only a thug, bully or clueless splits the apple the second way.