What is "roedgroed"

Rødgrød ( Danish, ) , Rote Grütze ( German), or Rode Grütt ( Low German), meaning "red groats", is a sweet fruit dish from Denmark and Germany.

The name of the dish in Danish features many of the elements that make Danish pronunciation difficult for non-native speakers, so 'rødgrød med fløde' (red groats with cream) is thus a commonly used shibboleth.