Description
The Ninja PB041ST brews single cups from either standard capsules or loose grounds, from a body 5.31 inches wide with a 56 ounce removable reservoir behind it. Ten brew sizes are offered across the two inputs, up to a 24 ounce travel mug on the grounds side, and there is a storage drawer in the base for whichever basket you are not using.
That last detail is a good summary of the machine. It is a considered piece of design rather than a feature list, and among the machines in our single serve brewers category it is the one that treats grounds as a first class input rather than an afterthought. It carries roughly 2,286 published ratings at a 4.2 average since September 2023.
Ten Brew Sizes
The pod side offers 6, 8, 10 and 12 ounces. The grounds side offers 6, 8, 10, 12, 18 and 24 ounces. That asymmetry is honest engineering: a capsule contains a fixed dose, and stretching it past 12 ounces just dilutes it, while a basket you fill yourself can support a much larger cup.
Three brew styles apply to both: Classic, Rich and Over Ice. Rich slows the cycle so contact time increases, which is the only strength mechanism available without a pressurised group. Over Ice brews a concentrate intended to be diluted by melting ice, which is the correct way to make iced coffee rather than chilling a normal brew.
One owner describes their settled routine as ground coffee on the Rich setting at 14 ounces, which is the kind of specific detail that a specification sheet never gives you.
The Temperature Complaint and the Workaround
Ninja markets Thermal Flavor Extraction Duo, claiming even saturation and precise temperature control for both pods and grounds. No temperature figure is published anywhere on the listing, so that is a description of intent rather than a specification.
The most useful owner report addresses this directly. Writing after more than a year of twice weekly use, one owner states the coffee is not as hot as they like, and describes two workarounds: let the machine sit for a few minutes before brewing, or run six ounces of water through it first. Both work by preheating the boiler and the flow path, which on a machine that heats each cup from cold is exactly where the heat goes on the first brew. That is a real and repeatable characteristic of this design rather than a fault, and it is worth knowing before you decide the machine is underperforming.
The Storage Drawer
A drawer in the base holds the brew basket or the permanent filter when it is not in use. On a dual input machine this solves a problem that everyone who owns one recognises: two loose plastic parts that live in a kitchen drawer, get separated, and are never where you need them.
It also means the changeover between formats is quick, which is what determines whether a dual machine actually gets used both ways or settles into one mode. A scoop, a removable brew basket, a pod adapter and a permanent filter all come in the box, so there is nothing further to buy.
The Reservoir and the Footprint
Fifty six ounces is a large tank for a single serve machine, enough for four to nine brews depending on the size you choose, and it lifts out to carry to the sink. On a machine that will brew a 24 ounce travel mug, a small tank would mean refilling every second use.
The footprint is the more remarkable number: 13.07 inches deep by 5.31 inches wide by 13.31 inches high, at 7.74 pounds. Under five and a half inches wide means it will fit in a gap where nothing else will, at the cost of needing thirteen inches of depth. That is the right trade for most kitchens, where depth is available and width is not.
An Espresso Label That Is Wrong
The specification table lists “Specific Uses For Product = Espresso”. It cannot make espresso. There is no pump group, no portafilter and no steam wand. One owner is exasperated enough to write the correction in capitals in their own review, which tells you how often the label misleads people.
If espresso is what you want, this is not the machine and no setting on it will produce one. What it makes is filter coffee at single serve volumes, which is a different drink, and one that is better suited to a large mug than to a small strong cup. The recommended uses field compounds the confusion by mentioning coffeehouse style drinks; there is no frother and no milk function anywhere on this machine, so any milk drink is something you make separately and add.
A Warning for Buyers Outside North America
One published review is from a buyer in the United Kingdom who received a machine fitted with an American plug, and notes that nothing in the listing mentioned it. They also observe that the reviews shown on their regional page appear to be pooled from the United States listing.
Both points are worth taking seriously. This is a 120 volt appliance with a North American plug, and a heating appliance on the wrong supply is not solved by an adapter. The pooled reviews issue is more general: on this catalogue, star averages and review text frequently come from a different regional listing than the one you are buying from.
What the Specifications Do Not Settle
No brew temperature is published, despite temperature control being the headline claim. No wattage is published. No brew time is published. The maximum mug height is not stated, only that a 24 ounce travel mug fits. There is no warranty term in the table. The manufacturer field reads SharkNinja, which is correct rather than an error.
Who It Suits
This suits somebody who wants one machine that handles capsules for convenience and loose coffee for cost and choice, in a narrow gap on a counter, with a tank that lasts several brews. The 24 ounce grounds setting, the storage drawer and the width are the three things that make it better than the usual dual input brewer.
Look elsewhere if you want your first cup piping hot without a warm up brew, or if you need espresso. The Ninja PB051 is the sibling model in the same range, the Keurig K-Supreme is the capsule focused rival, and the Ninja DualBrew adds a twelve cup carafe to the same pods and grounds idea. Anyone deciding between capsules and loose coffee on cost should start with the prices in our single serve capsules and pods section.
