asobu Cold Brew Coffee Maker 40oz
- Filter Type: Reusable Filter
- Coffee Maker Type: Coffee Infuser
- Operation Mode: Manual
- Material: Stainless Steel
Last refreshed Jun 15, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A capable manual cold brew setup with genuine 24-hour cold retention, worth it if you're fine steeping a day ahead and can accept one reported lid durability issue.
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ASIN: B075X3CV1XModel: KB900Category: Cold Brew Coffee Makers
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Overview
A manual cold brew system with a 32 oz brewing chamber and a 40 oz vacuum-insulated stainless steel carafe, using coarse grounds steeped 12-24 hours to make a concentrate served hot or over ice.
This produces a concentrate rather than a ready-to-drink brew, so it's diluted or served straight depending on preference, and the steep runs closer to a full day than quick-brew cold coffee gadgets.
- 32 oz brewing chamber, 40 oz insulated carafe
- Copper vacuum insulation, cold up to 24 hours
- BPA-free Tritan brew basket
- Leakproof, portable stainless steel body
Who it's for
Coffee drinkers who don't mind planning a day ahead and want a portable, insulated carafe rather than a pitcher. Less suited to a two-person household wanting daily cold brew, since the 40 oz carafe runs out fast when split.
Pros and cons
- Genuine 24-hour cold retention per the insulated carafe
- Portable, leakproof design for office or car
- Works with regular coffee grounds, no special filters
- BPA-free Tritan brewing chamber
- Requires a 12-24 hour steep, no same-day brewing
- 40 oz carafe is tight for two people
- One reported lid failure, with a slow replacement process
Performance notes
Cold water draws through the coarse grounds over the full steep window, and the copper-insulated stainless carafe is rated to hold the brew cold for up to 24 hours afterward. The brewing basket is BPA-free Tritan plastic.
Specifications
| Brand | asobu |
|---|---|
| Model | KB900 |
| Dimensions & fit | |
| Item Weight | 2.5 pounds |
| Item Dimensions D x W x H | 5.4 × 5.4 × 14 inches |
| Construction & materials | |
| Material | Stainless Steel |
| Color | Black |
| Exterior Finish | Stainless Steel, Tritan |
| Compatibility & installation | |
| Smart Home Compatibility | Not Smart Home Compatible |
| Included components | |
| Customer Package Type | Standard Packaging |
| Unit Count | 1 |
| Included Components | Brewer And Mug |
| Other details | |
| Filter Type | Reusable Filter |
| Coffee Maker Type | Coffee Infuser |
| Operation Mode | Manual |
| Is the item dishwasher safe | No |
| Coffee Input Type | coffee_grounds |
| Number of Items | 1 |
| Specific Uses For Product | Cold Brew Coffee Maker |
| Recommended Uses For Product | Cold Brew Coffee On-the-Go |
| Style | cold brew coffee maker |
| Part Number | 408824 |
| Item Type Name | Cold Brew Coffee Maker |
Frequently asked questions
How long does it take to brew?
The steep runs 12 to 24 hours with cold water and coarse grounds; it isn't a quick-brew system.
Is 40 oz enough for two people?
It can be, but at least one reviewer found it too little to cover both themselves and a partner daily.