beer tie
n.— «Talk to pub landlords and one of the most insistent complaints is something called the “beer tie.” It means that not only must they pay rent to the PubCo that owns their premises—they must buy all their beer from them, too.» —“The blanding of Britain: The murder of the English pub” by Paul Kingsnorth Daily Mail Mar. 16, 2008. (source: Double-Tongued Dictionary)