A premium-feeling stainless steel cold brew maker built for people who want durability, portability, and a cleaner countertop look than glass alternatives.
Cold brew drinkers who want a travel-ready, stainless steel build that can go from fridge to bag without the breakage risk of glass.
Skip if
You are on a tight budget, prefer the flavor transparency of glass, or need to see the brew level without opening the lid.
Type Coffee Infuser
Coffee input Coffee_Grounds
Filter Reusable Filter
Operation Manual
Controls Buttons
Material Stainless Steel
Priced 96% above the category median ($34.99 across 9 tracked models)
Weight of 2.5 lb - lighter than 60% of the 9 models we track
Our scorecard
4.5/5overall
Owner rating4.5/5
4.5 average across 1,600 owner ratings
Popularity3.3/5
1,600 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other coffee makers, kettles and brewers we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
The Asobu KB900BK is a coffee infuser-style cold brew maker built from stainless steel with a Tritan finish, priced at $68.50 and rated 4.5 stars across 1,600 reviews. The stainless steel and Tritan combination makes this one of the more durable options in the cold brew category, with a design that can handle being moved around without the fragility concerns of an all-glass unit.
At 5.39 by 5.39 by 14 inches and 2.5 pounds, the KB900BK has a tall, cylindrical profile that stores upright in most refrigerator doors. The reusable filter handles loose coffee grounds, and the manual operation means there are no electrical components to maintain or fail. The black colorway gives it a clean, modern appearance on the counter.
The main tradeoff with any stainless steel cold brew maker is opacity. You cannot see the brew color or level without opening the unit, which makes it harder to judge strength by sight alone. At $68.50, it sits above the entry-level tier, but buyers who have gone through one or two glass pitchers often find the durability upgrade worth the cost difference.
Pros
Stainless steel and Tritan construction handles travel and daily use without breakage risk
4.5-star average across 1,600 reviews reflects strong real-world satisfaction
Reusable filter eliminates paper filter costs
Tall, cylindrical design stands upright in refrigerator doors
Modern black finish suits most kitchen styles
Cons
Opaque body means you cannot see brew color or level without opening
Not dishwasher safe, requiring hand-washing
At $68.50, it costs more than most glass alternatives at this capacity range
Performance notes
Stainless steel does not impart off-flavors, and the reusable filter is designed to keep grounds contained during the 12 to 24-hour steep. The Tritan exterior finish helps insulate the brew slightly, keeping it cold longer when the unit is removed from the refrigerator to pour. The infuser-style design separates the grounds chamber from the liquid, which makes post-brew cleanup more contained than standard pitcher designs.
What buyers say
Across 1,600 ratings at 4.5 stars, the dominant themes in buyer feedback are build quality and durability. Many buyers specifically mention switching from glass after breakage and finding the KB900BK a clear upgrade in that regard. A smaller group of reviewers note that the steep price is the only hesitation, and some mention wanting a slightly larger capacity.
Can the Asobu KB900BK be used for iced tea as well as cold brew coffee?
Yes. The infuser filter works with any loose-leaf or coarsely ground brewing material, so it can steep tea, herbal blends, or coffee with equal ease.
Is the KB900BK dishwasher safe?
No, it is listed as not dishwasher safe. Hand-washing with warm soapy water is recommended to protect the stainless steel and Tritan finish.
How long does the cold brew stay cold after removing it from the refrigerator?
The stainless steel construction provides some insulation, but this is not a vacuum-insulated bottle. Expect it to stay cold for 30 to 60 minutes out of the fridge, depending on ambient temperature.
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