Gevalia is inviting coffee drinkers to go single with a free sample.

You can get a free single-serve sample of Gevalia coffee for use in a Keurig K-Cup Brewer. To request your sample, go to www.facebook.com/gevaliacoffee and click on “Go single with Gevalia.”

As with most offers on Facebook, you have to “like” the page. You also have to live in the U.S. and be at least 18 years old, according to the offer. It says it’s available while quantities last and supplies are limited.