1. The lees or dregs of cane juice, used in the distillation of rum.
    The use of dunder in the making of rum answers the purpose of yeast in the fermentation of flour. — B. Edwards.

The above text is a snippet from Wiktionary: dunder
and as such is available under the Creative Commons Attribution/Share-Alike License.

Need help with a clue?
Try your search in the crossword dictionary!