A rich, sweet, rum-flavoured sauce of butter and sugar, served especially with mince pies or Christmas pudding.
More example sentences
- He also talked to butter-maker Sue Forrester and her husband Tom and tasted some of her Cumberland rum butter, which is traditionally served at christenings.
- The exact origins of rum butter are shrouded in mystery.
- You can make your spiced rum butter in advance and keep it in the fridge.