Review: Hario Filter-in Coffee Bottle

3 Weeks ago Hario announced a new product, the Hario Filter-in Coffee Bottle for cold brewing. Hario was so kind to send me one to review.

A cold brew… bottle?

Pretty much. The biggest selling point of this bottle is the filter. The filter is a “closed” compartment in the bottle, which means that water can get in and out, but the grounds can not. Filtering the grounds out of the water with a French Press and V60, like I described in Cold Brew Coffee, can be a tedious and slow process. The Filter-in Coffee Bottle enables you to just lift the grounds out.

The shopping list

Simplicity is key

• Freshly roasted whole beans (55 grams)
• Water (700 ml)
• Hario Filter-in Coffee Bottle
• Scale
• Grinder

Step by step

1. Grind 55 grams of freshly roasted coffee on a medium-fine setting
   

   Use any type of bean you like. I like Yirgacheffe or Ethiopian for my cold brews

2. Fill the filter with the ground coffee
   

   Using a funnel is easier than this, just don’t damage the plastic mesh

3. Put the lid on the filter
   

   Line up the top and bottom like this, insert straight and then twist the top clockwise to lock

4. Attach the filter to the top of the bottle
   

   The top of the filter has 2 tabs that fit straight into the top, twist it either way to lock it in

5. Put the top of the bottle on the bottle
   

   To make this easier, remove the “cork” first

6. Put the bottle on the scale and tare it
   

   Using a scale makes measuring ratios easy

7. Add 700 ml of water
   

   Using a funnel will, make this easier

8. Put the “cork” on
   

   The “cork” keeps the bottle from spilling and debris from falling in

9. Shake gently and put it in the fridge
   

   A few shakes will suffice, as the coffee will extract either way over time

10. After 8 hours, take the bottle out of the fridge
    

    It’s best to put it on a kitchen towel to catch any spills

11. Gently remove the top with the filter from the bottle
    

    Let the filter drain before setting it down on a coaster

12. Detach the filter from the top of the bottle
    

    Twist the top in either direction to detach the filter

13. Put the top back on the bottle
    

    Wipe the bottle down with the kitchen towel afterwards

14. Fill a glass 3/4 of the way with some ice and pour the coffee over it
    

    Also great undiluted!

15. Optionally add milk or water and enjoy!
    

    Store the remaining coffee in the fridge for up to 2 days

Review

The Filter-in Coffee Bottle has solved a problem that I have run into several times with immersion Cold Brew, filtering. The filter is very well built, locks tightly and has a very fine plastic mesh that doesn’t add or subtract from the taste of the coffee. However, the mesh doesn’t have the fine trapping characteristics of a paper filter, if your grinder produces a lot of fine dust you will find that in the bottom of the bottle. All normal grounds will come out very easily when you lift the filter out, making a half hour task last no longer than 5 seconds. Hario makes this bottle in two colors, the mocha colored one they sent me, and a brown version.

The top of the bottle is rather flexible, which makes it easy to put it on the bottle or take it off. Even though it has plenty of grip on the glass lower half, it isn’t recommended to carry the bottle by the top as it will undoubtedly detach itself. On the side of the bottle there are a few marks indicating specific volumes, including one at the 700 ml level.

On the subject of volume, I would’ve liked to see an alternative, bigger bottle. The brewing vessel is also the serving and storing vessel, making it is impossible to brew the next batch while there’s still coffee in the bottle.

There’s only one thing I didn’t like, which was the recipe that came with it. An 8 hour brewing time is a very short time for cold brew coffee. Putting the bottle in the fridge while brewing slows down the extraction even further, making that 8 hour window too short. I’ve successfully left it on the counter for 36 hours which resulted in a more concentrated, fuller bodied coffee.

Conclusion

Hario has made a very nice looking version of their Mizudashi brewers in the shape of a wine bottle. The filter works great and cleanup is easy, just empty the filter and put everything in the dishwasher. It doesn’t have any real downsides, the recipe in the end is entirely up to you.

Hario Filter-in Coffee Bottle

9

Buildquality

9.0/10

Ease of use

9.0/10

Pros

• Very fine filter
• Easy to clean
• Visually appealing

Cons

• Recipe
• One size only