The Orea O1 is an open-bottom flat-bed dripper that strips the Orea concept down to its essentials: a flat coffee bed, minimal resistance at the base, and standard 185 Wave filters. Where the V4 Narrow slows extraction and the V4 Wide opens it up, the O1 goes further still — almost all the brewing variables move to the brewer's side of the equation.
This is not a dripper for beginners. The open base means pour speed, grind size, and stir technique translate directly into the cup with no damping from the device itself. Done well, the O1 produces competition-grade cups with vivid clarity and articulate acidity; done casually, it produces thin, under-extracted brews that taste like nothing.
A sensible starting recipe: 14 g of coffee to 240 g of water (1:17), a grind one notch finer than the V4 Wide setting, water at 94 °C, four continuous pours in 2:00 to 2:45. Treat the O1 as a training tool: every miscue shows up in the taste, which makes it one of the fastest ways to improve your pour technique if you are willing to live with the feedback.