Earlier this summer, we shared a story about a Molson beer promotion that offered free beer in select locations around Europe. Now Dutch brewer Heineken has launched its own free beer promotion for its Amstel brand. So far, the “Amstel Pause” vending machines have only surfaced in Sofia, Bulgaria.

In order to get a free can of Amstel beer, participants simply need to push a button and pause for three full minutes in front of the vending machine. Patience apparently has its rewards.