Why does washing knives in the dishwasher dull them?

Question

Why does washing knives in the dishwasher dull them?

In: 890

Answer 1

I think there may be some cultural differences here because British dishwashers are quite different from American ones. I’m not sure if the presence of salt, the use of hot water (instead of heating cold water), the type of detergent, or the way the dishwasher dries matter, but all those things are different on each side of the Atlantic.