Comment by Aro on Unrivaled Isekai Gourmet: Rising to the Top: Banished to the Mountains While Living a Relaxed Camping Life, I Became the Strongest. Now the Powerful Won't Leave Me Alone as Their Downfall Begins - Chapter 3

The knife eliminates toxins... This fact could mean some foods would not taste how you want them as there are several "toxins" people specifically choose to eat, capsaisin is the first to come to mind meaning cutting a pepper would get rid of all spiciness