As the weather warms up here in Australia, cold brew coffee comes back on to the radar. There’s a number of ways to enjoy cold coffee and making it is super-easy. You can make cold brew with a simple low-tech set-up like a glass jar, or hack your Aeropress or invest in some of the more advanced systems we cover below.
Cold Brew or Cold Drip
Cold Brew – coffee and water are mixed at the start of the process and can be steeped for up to 15 hours. The grounds are then filtered out. Depending on the coffee to water ratio used, you can make either a ready-to-drink brew or a strong coffee concentrate for mixing with milk (or whatever takes your fancy).
Cold Drip – The water is added (dripped) on to the coffee very slowly – anywhere between 2 to 6 hours depending on the flow rate. The already filtered cold brew drips out the bottom into a jug. Cold drip is generally brewed as a concentrate for mixing.
Coffee to Water Ratio
I most commonly see recipes with a ratio of around 1:10 (1 part coffee to 10 parts water). I have also seen recipes calling for a very strong 1:4 ratio. There’s no rules about it – brew to taste.
Yesterday on the Bruer I use 60 grams of coffee to 600 grams of water. For drinking, I mix the resulting brew 50/50 with milk.
Mason Jar Cold Brew
In a pinch, I take the low-tech route and combine fresh ground coffee and water in a glass mason jar and stick it in the fridge overnight. Experiment with the coffee to water ratio – 1:10 is a good place to start. Take the coffee out of the fridge in the morning and filter off the coffee grounds using a strainer, cheesecloth or whatever you have on hand. If you have one, you could even brew in a french press and plunge and pour the coffee into another vessel in the morning.
Aeropress Cold Drip Coffee Hack
I love this Aeropress cold drip hack from Sputnik Coffee. All you need is an Aeropress and a plastic bottle.
Australia – https://espressounplugged.com.au/aerobie-aeropress
New Zealand – https://presso.co.nz/aerobie-aeropress
USA/World – https://espressounplugged.com/aerobie-aeropress
Canada – https://espressounplugged.ca/aerobie-aeropress
Bruer Cold Drip Coffee Maker
The Bruer is designed for cold drip and is easy to use. Setting the drip flow rate on the Bruer is very easy and I’ve found their recommendation for one drip per second to be on the money. Another advantage of the Bruer is that you can place both ice and water in the top, forgoing the need to put it in the fridge (my fridge isn’t big enough). Cleaning is also very easy. Check the video below for a demonstration.
Australia – https://espressounplugged.com.au/bruer-cold-brew-coffee-maker
New Zealand – https://presso.co.nz/bruer-cold-brew-coffee-maker
Brewover Coffee Maker
The Brewover is a very cool brewer. It’s designed for several cold and hot brewing methods: Cold drip, cold brew, hot pourover or full immersion brewing. I backed the successful Kickstarter crowdfunding campaign and have been very happy with it. So much so that we’re now selling the Brewover on our Australian and New Zealand websites.
Most of the recipes that are included with the Brewover are quite strong (1:5 ratios). Their recommendation for cold drip flow rate is one drip every five seconds. I found this to be particularly slow and would recommend experimenting with faster rates.
The instructions also recommend 70 grams for cold drip but we’ve found this is too much for the chamber unless you grind quite fine. We recommend 60 grams of coffee, with 600 grams of water and a slightly coarser grinder.
Australia – https://espressounplugged.com.au/brewover-coffee-maker
New Zealand – https://presso.co.nz/brewover-coffee-maker
Toddy Cold Brewer
The Toddy is specifically designed for full-immersion cold brew, not cold drip. The coffee grounds and water are mixed in the top chamber, steeped in the fridge overnight, then filtered out the bottom into the jug. It’s the filtration part that I particularly like. I’ve found filtering my mason jar brews to be a laborious and lengthy process. paper filters clog very quickly and other materials leave a little too much sediment in the brew for my taste. The Toddy makes for a simple and clean process.
Australia – https://espressounplugged.com.au/toddy-cold-brew-coffee-system
New Zealand – https://presso.co.nz/toddy-cold-brew-coffee-system