Knives cai dao
After I read the cai dao article I bought a knife and it is the best knife for chopping herbs and vegetables. And it rusts.
I wash it with a silicon sponge to remove the rust and oil it with mineral oil. It appears clean but when I chop an onion I have faint rust on the onion. The cai dao will have a rusty smear.
Can someone address the use of the cai dao and the use of “rusty onions”!