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Ninja

Ninja Pods & Grounds Specialty Coffee Maker — Stone

A narrow single-serve brewer with a 56 fl oz removable water tank.

Original price was: $129.99.Current price is: $99.99.

4 in stock

The PB051ST serves households that want individual drinks without committing to pods. It accepts grounds as well as pods, includes a permanent filter and offers larger ground-coffee servings for a travel mug.

Features at a glance

  • Two coffee formatsBrew loose grounds or a compatible coffee pod.
  • Seven grounds sizes6, 8, 10, 12, 14, 18 or 24 fl oz.
  • Four pod sizes6, 8, 10 or 12 fl oz.
  • Four brew stylesClassic, Rich, Over Ice and Specialty concentrate.
  • 56 fl oz tankRemovable reservoir for filling.
  • Milk frotherFold-away whisk for separately heated or cold milk.

Product description

The Stone PB051ST makes sense when coffee is prepared one cup at a time, especially if household members prefer different beans or use pods only occasionally. Its permanent filter lets you use ground coffee, while the pod adapter provides the alternative format. The body is 5.59 inches wide, and the adjustable tray accommodates mugs up to eight inches tall, making the space around a travel cup an important part of planning the setup.

Grounds and pods do not share the same maximum serving size. Loose-coffee settings reach 24 fl oz, while pod settings stop at 12 fl oz; choose the format before deciding how large a drink to brew. Specialty provides a concentrated coffee base for milk drinks. The included frother can texture milk, but you must warm the milk separately for a hot latte. That additional step matters if you are comparing this brewer with a machine that has a steam wand.

Why choose this model

Use your own ground coffee

The included permanent filter lets the brewer work without a pod for every cup.

Make room for a travel mug

An adjustable tray and eight-inch mug clearance support brewing directly into a suitable travel vessel.

Specifications

Ninja Pods & Grounds Specialty Coffee Maker — Stone specifications
Model / color PB051ST / Stone
Reservoir 56 fl oz, removable
Dimensions, L × W × H 13.07 × 5.59 × 13.31 in
Weight 6.26 lb
Maximum listed grounds size 24 fl oz
Maximum mug height 8 in
GTIN / barcode 622356665599

Before you buy

  • This is a single-serve brewer; the larger size is a ground-coffee travel-mug setting, not a carafe program.
  • Avoid espresso-fine grounds in the permanent filter and heat milk separately for hot foam.

Care & maintenance

  • Wash the frother whisk after every milk drink and clean the dispensing nozzle regularly to remove buildup.
  • Hand wash the adapter storage bin. Follow the manual’s part-specific washing directions and descaling cycle.
Sources & product documentation

Product information reviewed September 26, 2026. This is researched buying guidance; Kiku Home has not hands-on tested this product for this page.

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