Novice Guide: Homebrewing with the Iwaki Water Drip (Cold Brewed)

Hello cold brewed coffee! This novice has fallen in love with cold coffees on hot and steamy Singapore days.
Cold Brew Coffee

The heat of Singapore makes a cold brewed coffee the perfect beverage for this coffee lover. My first bottle of cold brewed coffee was discovered while rushing from one part of town to the other. No time to wait or sit down, I decided to grab a bottle of the dark liquid and on first taste, I fell in love. I really hadn’t understood what all the fuss was about until that very point. So the next time I saw a cold brew contraption for sale under $50, I bought it! It was the Iwaki Water Drip and I got it on the Grouphunt Marketplace for $49.90 because it looked cool, was listed as able to produce cold brew and I could purchase it right away.

Once I had my hands on it, I was ready to go. I did stack everything in the wrong order first time around but a look on the box quickly fixed the situation. I started my first ever water drip (cold brewed) coffee and watched in anticipation as it started to drip through. It’s about one drip per three seconds! Realising that this could take hours, I popped it into my fridge and went out for the day. I came back a few hours later, hot, sweaty and thirsty! You can only imagine how beautiful my first “cold brewed” coffee tasted. It was icy cold, refreshing, beautifully smooth and wonderfully tasty.

Iwaki Water Drip


What is cold brewed coffee?

Cold brew coffee, by definition is actually an immersive process where you steep the coffee grounds in water for 18 hours or more. The liquid is then strained to remove the grounds. Anyone can do this with a bucket, jar or jug, water, coffee grounds and a fridge. An iced coffee, apparently is the method where coffee is brewed the normal way and then chilled. So… the Iwaki Water Drip (Iwaki) is not exactly a cold brewed coffee thingy. Nor is it an iced coffee, not the way I prepare it. The Iwaki drips water through the grounds slowly and as such is a different process. This novice really doesn’t know the difference between the chemical process or composition of either methods, but I do know that I love a good cold brew or iced coffee on a hot and muggy day.

Iwaki Water Drip

From left, clockwise: Water tank, coffee server (or jug), coffee grounds, water (pictured in the white jug), coffee tank, outer lid (for water tank) and lid (for coffee server)

What you’ll need:
  • Everything that comes in your Iwaki box
  • Water, filtered is preferred (I bet the water we used in our water tasting would produce an exceptional brew)
  • Coffee grounds, freshly ground if possible (I use a medium grind for this)

Yes, it really is as simple as that!

This is how to do it:
  1. Insert the coffee tank into the Iwaki coffee server (or jug).

    Iwaki Water Drip

    Pictured is the full stack before coffee or water is added. The coffee tank sits inside the coffee server.

  2. Pour in freshly ground coffee up to the line (this is about 8 to 10 grams)
    Iwaki Water Drip
  3. Set the water tank on top and fill with water up to the little downward facing arrow (this is about 450 – 500 grams of water). The water will start its slow drip almost immediately.
    Iwaki Water Drip
  4. Place it in the fridge and allow all the liquid to drip through. This should take about three to four hours.
Seriously, that’s all you need to do!

But if you’re like me, and think it’s a bit weird that not all the grounds are saturated before popping it into the fridge, go ahead and pour a tablespoon of water over the top of the grounds to saturate before you put the water tank on top. I have also heard that putting an Aeropress filter over the top of the coffee grounds will help ensure better saturation. I haven’t tried this myself because after my Novice Guide: Aeropress, I loaned my set out to my brother who has been experimenting with various brews. It’s been so much fun comparing notes so stay tuned for a downloadable/printable coffee brew sheet.

Once all the liquid has dripped through, your coffee is ready to drink and can be left in the fridge for a week! Mine never lasts more than a day or two. 🙂

Iwaki Water Drip

This is what the grounds look like after the water has dripped through.

Iwaki Water Drip

I love my cold brew on a hot day!

If you have an Iwaki Water Drip or any of the devices I’ve talked about in my Novice Guides, please share your tips, tricks and advice. This novice is still learning and hopefully I’ve inspired some of you to have a stab at brewing your own coffee at home.

Don’t forget to read our other coffee articles below!

This happens to be the last of my Novice Guides on coffee and I feel kind of sad! The only thing to do will be to find more coffee gadgets to try out and write about. Check out my Lust List of Coffee Gadgets and you may just be hearing about some of these in the future! Also, always feel free to share your experiences with us by commenting below or on Facebook.

Enjoy your coffee!

We were not paid to write this article. Opinions and comments expressed are the author’s own, based on personal experience and preferences. 

Angela Manners loves finding an interesting story and talking to people about what they are passionate about. She is Australian but was born in Bangkok, grew up in Southeast Asia and then studied in America. Angela is passionate about coffee, food and everything that surrounds them.
No Comment

Leave a Reply

Newsletter Sign Up!

Latest Posts