Answer: barleycorn

AnswerCrossword Clue
BARLEYCORN

Subject of Burns poem.

BARLEYCORN

Whisky.

BARLEYCORN

John ....

BARLEYCORN
Beverage of a kind.
BARLEYCORN
Sir John of old song.
BARLEYCORNJohn
BARLEYCORNBurns celebrated this John
BARLEYCORNMalt liquor base