I have not only one for this week’s idiom, because i found some interesting idioms using the same word
Dutch auction
“if something is sold by setting a price, then reducing it until someone buys it, it is sold in a Dutch auction”
Dutch courage
“it is the reckless bravery caused by drinking too much”
Dutch treat
“if something like a meal is a Dutch treat, then each person pays their own share of the bill”
Dutch uncle
“a Dutch uncle is a person who gives unwelcome advice”
Dutch wife
“a Dutch wife is a long pillow or a hot water bottle”
Now I’m wondering, are these idioms really reflect the Dutch?