Primula’s cold brew maker is a straightforward, single-purpose tool. It focuses on the one job of turning coarse grounds and cold water into smooth, low-acid concentrate. The design is simple: a glass carafe, a fine mesh filter basket, and a lid.

You add your coffee to the filter, pour in water, and let it steep in the fridge. The 1.6-quart capacity yields about six servings of ready-to-dilute concentrate. The glass feels substantial, and the wide mouth makes cleaning and filling easy. The entire unit is dishwasher safe, which is a significant practical advantage over fussier models.

The resulting brew is noticeably less bitter than hot-brewed coffee poured over ice. It’s a set-and-forget system that reliably produces a week’s worth of iced coffee with about five minutes of active effort. Just be sure to use a coarse grind to prevent sediment from slipping through the mesh.