Why the Kalita Wave 185 Is the Friendliest Flat Bed You Can Buy
If you have ever watched a barista pour over a Hario V60 and thought, "that looks intimidating," the Kalita Wave 185 is probably the dripper for you. Designed in Japan and beloved by cafes worldwide, the Wave 185 trades the V60's steep cone for a flat bottom with three small drainage holes. The result is a dripper that forgives uneven pours, smooths out beginner technique, and still rewards a careful hand with sweetness and clarity in the cup.
This guide walks through what makes the Wave geometry special, a reliable recipe for one or two cups, and the small habits that separate a good Kalita brew from a great one.
The Geometry: Flat Bed, Wavy Filter, Even Extraction
The Kalita Wave's defining feature is its flat bed. Unlike the V60 or Origami, where coffee piles up against a sloped wall, the Wave keeps the grounds in a uniform layer roughly the same depth across the entire dripper. In most cases, that geometry produces a more even extraction because water has a similar distance to travel through every part of the bed.
The fluted "wave" filter does two important jobs. First, it minimizes contact between the paper and the dripper wall, which keeps the brew from channeling along the edges. Second, the small flat base with three drainage holes acts as a flow restrictor, so your pouring speed has less influence on total brew time than it would on a V60. For new brewers, that means a slightly clumsy pour will still produce a drinkable cup.
A few practical implications follow from this design:
- Grind a touch coarser than V60. The flow restriction means water lingers longer above the bed, so you do not need a fine grind to extract well.
- Pour height matters less. You are not trying to agitate a deep cone, just keep the bed wet and level.
- Bypass is low. Water mostly flows through the coffee rather than around it, which gives the cup body and structure.
A Reliable 1:16 Recipe for the Wave 185
The 185 size comfortably brews two cups, roughly 250 to 500 ml of finished coffee. Below is a recipe that works well as a starting point. Adjust to your taste once you have brewed it a few times.
Recipe at a glance
- Coffee: 22 g, medium grind (slightly coarser than table salt)
- Water: 350 g at 94 to 96 C
- Filter: Kalita Wave 185 white paper
- Total brew time target: 3:00 to 3:30
Step by step
- Rinse the filter with hot water until you cannot smell paper. Discard the rinse water. This also preheats the dripper and server.
- Add coffee and tap the dripper gently to level the bed. A flat starting bed is the whole point of the Wave, so do not skip this.
- Bloom (0:00 to 0:45). Pour 50 g of water in slow concentric circles, soaking every ground. Watch for a thick, even crust of CO2. If the bloom is sluggish, your beans may be older or your water cooler than you think.
- First main pour (0:45 to 1:15). Add water in gentle circles until the scale reads 200 g. Stay inside the dry ring near the filter wall.
- Second main pour (1:30 to 2:00). Top up to 350 g, again pouring in calm circles from the center outward.
- Drawdown. The bed should drain by around 3:00 to 3:30. A clean, flat puck of grounds left behind is a sign of even extraction.
If your brew finishes much faster than 3:00, grind finer. If it stalls past 4:00 and tastes bitter or hollow, grind coarser. This is true for almost every pour-over device, and the Wave is no exception.
Two Actionable Tips That Make a Big Difference
Tip 1: Pour into the bed, not against the wall
The single most common Wave mistake is dribbling water against the fluted filter to "rinse the sides." That just sends water around your coffee instead of through it. Keep your pour inside the visible coffee bed, leaving a roughly 1 cm dry ring near the wall. Your cup will gain noticeable sweetness and body.
Tip 2: Use temperature as your second variable
Once your grind is dialed in, treat water temperature like a flavor knob. As a common rule of thumb:
- 94 to 96 C for medium and dark roasts you want to soften.
- 96 to 99 C for light, dense roasts that need help opening up.
[Tetsu Kasuya](https://cup-timer.com/en/barista/tetsu-kasuya), Scott Rao, and [James Hoffmann](https://cup-timer.com/en/barista/james-hoffmann) have all written about temperature as a quiet but powerful lever. The Wave's forgiving geometry makes it a great place to experiment, because changes show up in the cup without being masked by erratic flow.
Where the Wave Fits in Your Brewing Lineup
The Wave 185 is not trying to be the most precise dripper in the world. A V60 in expert hands, an Origami with the right filter, or a Chemex on a slow morning can each pull off things the Wave cannot. What the Wave offers is consistency under imperfect conditions. Whether you are brewing before sunrise, teaching a friend their first pour-over, or traveling with a hand grinder you do not fully trust, it tends to deliver a clean, sweet, well-balanced cup.
For beginners, that consistency is a gift. For experienced brewers, it is a quietly useful baseline against which to compare more dramatic devices like the April or the Kalita Wave 155. Either way, the flat bed is doing real work, and once you trust the geometry, the recipe almost takes care of itself.