Jammy
Wines with ripe, concentrated flavours of sweet fruit, with little acidity or tannin.
Jeroboam
A large wine bottle. For still wine a Jeroboam is 4.5 litres in capacity, the equivalent of six normal wine bottles (also known as a Rehoboam). A sparkling wine Jeroboam is 3 litres and the equivalent of four normal bottles (also known as a Double Magnum).
Jug wine
American term for an inexpensive table wine, often supplied in a fat glass jug.