Finnish for "installation
beer."
The
beer you drink while working on a project, where the
beer counts as part of the toolset. The rule is that there has to be a build: assembling, mounting, wiring, or installing something. A defined task with an end state, not just a chore.
Building a shed in the backyard qualifies. Mowing the lawn does not. Classic projects include flat-pack furniture, a deck, or installing an operating system. Engineering quality
may go down as cans go up, but morale goes the other way.