I don't know about a connection with Denmark, but I remember a connection with France..
Does anyone remember the French Onion Man.?
I grew up in Seghill during the late 50's early 1960's and I would often see him on the road from Blyth, heading to Seaton Sluice, Seaton Delaval, then onto Seghill.
His bike was a 'work of art'... piled so high with strings of onions, that you could barely see it as he passed by.
My Mam and most of the neighbours always bought a couple of strings of onions from him.
Mam was his last regular customer, so she always insisted he have a cup of tea and a biscuit before he continued his long journey back to Blyth..
I never knew where in France he came from, but he told my Mam that a small boat brought him from France to Blyth Harbour, and they would return to the boat during the week for more onions.
Looking back now, after all these years, I imagine he didn't have an easy time of it, yet, I always remember how happy he was, and seemed so grateful that we always bought his onions.