Bosor b'Cholov - Yagdil 5783: What is the halachic difference if an onion was cut with a kosher knife (i.e. meat) vs. a non-kosher knife?

Question

What is the halachic difference if an onion was cut with a kosher knife (i.e. meat) vs. a non-kosher knife?

Rabbi Berel Bell · Accepted Answer

According to the Mechaber, there is no difference. According to the Rama, the non-kosher knife makes the onion chanan.

What is the halachic difference if an onion was cut with a kosher knife (i.e. meat) vs. a non-kosher knife?