PORTLAND — The catchphrase for the dairy industry is “Got milk?” The winner of a contest launched by a Maine dairy that’s celebrating its 90th anniversary will get milk — lots of it.

Oakhurst Dairy will give a lifetime supply of milk to the winner of a Facebook contest encouraging customers to share their “Oakhurst moments” from over the years. The dairy company will also give $1,000 to a charity of the winner’s choice. Participants are asked to share via a photo, video or brief written story at the company’s Facebook page.

The contest runs through June 30, with a winner announced in July.

Bill Bennett from Oakhurst says that over nine decades customers should have some good stories to share about the region’s largest independent, family-owned dairy company.

Correction: This story was revised at 9:37 a.m., April 17, 2012, to reflect that Oakhurst will give $1,000 to a charity of the contest winner’s choice.