Dutch Courage can help you speak a foreign language, according to a study by Dutch, English, and German researchers that was awarded an Ig Nobel prize on Thursday. They showed that alcohol consumption sometimes improves a person’s ability to speak a foreign language. “We made an important discovery. Drunk Germans usually pronounce Dutch better than sober Germans.”
Never heard any German say Grachten properly (incl. myself), sober or drunk.
However, people of Cologne drink & speak Kölsch and that apparently works well with Dutch.