Cold brew is the fastest-rising coffee search of 2026 — what is the cheapest way to make it well at home?
Google just put out its post–International Coffee Day trend roundup and cold brew is the fastest-growing coffee search this year. I have been a drip-coffee person forever, but I am curious — is homemade cold brew actually better, and what is the cheapest setup that does not taste like brown water? I have seen $50 immersion brewers, and then people who swear by a mason jar and a strainer. I do not want to buy a gadget that ends up in the back of the cupboard. What actually works?
2 answers
- A mason jar and the coffee you already own — total cost $0
Do not buy a $50 brewer before you have tried the free version: coarse grounds in a mason jar, water, fridge overnight, then strain through a paper coffee filter in a funnel. If you actually drink it more than twice a week for a month, THEN spend the $12 on a reusable bag. Most cold brew kits are a $50 solution to a problem a jar solves.
- A $12 reusable cold brew filter bag (nut-milk-bag style)
The math is simple: coarse-ground coffee at a 1:8 ratio (80g per liter of water), 16–18 hours in the fridge, the filter bag sitting in any jar you already own. The $10–12 bag is your entire equipment cost — the $50 brewers buy convenience, not better extraction. Taste-test it against a $6 bottle of store cold brew concentrate: if yours tastes smoother, you just saved yourself $5 a week.