Ninja Pod & Grounds Coffee Maker — Stone PB051ST, Single-Serve, Built-In Frother

The Ninja Pod and Grounds Coffee Maker PB051ST is a compact single-serve brewer that makes coffee from either grounds or K-Cup® style pods and produces brew styles from Classic to Over Ice with a built-in fold-away frother.

Designed for small kitchens and coffee lovers who want café-style drinks at home, this Ninja stone-colored brewer blends versatility and convenience in a small footprint. It supports both pods and loose grounds, offers seven cup-size options up to a 24-oz travel mug, and uses Thermal Flavor Extraction DUO technology to optimize extraction for both brewing methods. The removable 56-oz reservoir and storage drawer keep the counter tidy while the built-in frother helps you create lattes, cappuccinos, and iced beverages without extra appliances.

How does the PB051ST let me use both coffee pods and loose grounds?

The machine includes a Ninja pod adapter for K-Cup® style pods and a removable brew basket for grounds, so switching between brewing methods is quick and tool-free. Thermal Flavor Extraction DUO adjusts saturation and temperature based on the chosen input for balanced flavor from either source.

• Includes Ninja pod adapter and removable brew basket
• Permanent filter option reduces paper waste
• Storage drawer keeps the brew basket or filter tucked away
• Selectable brew styles tailored to grounds or pods

What drink sizes and brew styles can I choose on busy mornings?

The PB051ST offers seven size presets: pod brews in 6, 8, 10, or 12 oz., and grounds brews in 6, 8, 10, 12, 18, or 24 oz., so you can grab a small cup or fill a travel mug. Four brew styles—Classic, Rich, Over Ice, and Specialty—let you craft anything from a quick daily cup to a concentrated base for milk-based drinks.

• Pod sizes: 6, 8, 10, 12 oz.
• Grounds sizes: up to 24 oz. travel mug
• Brew styles: Classic, Rich, Over Ice, Specialty
• Specialty produces a concentrate for lattes and macchiatos

How does the built-in frother expand my at-home coffee options?

The fold-away frother quickly turns hot or cold milk and milk alternatives into smooth microfoam, letting you make espresso-style milk drinks without a separate tool. It’s removable for easy cleaning and tucks into the brewer to save space when not in use.

• Creates hot or cold froth for lattes and cold brews
• Fold-away design preserves counter space
• Removable for rinsing and dishwasher-safe parts
• Works with dairy and plant-based milks

What convenience and maintenance features should I expect?

The Ninja PB051ST focuses on simple daily use: a removable 56-oz. reservoir makes refills fast, and a storage drawer keeps accessories organized. Thermal Flavor Extraction DUO ensures consistent temperature and saturation for repeatable results, while included accessories cover most day-to-day needs.

• 56-oz. removable water reservoir for easy refilling
• Storage drawer for the brew basket or permanent filter
• Included scoop, permanent filter, and pod adapter
• Removable parts designed for straightforward cleaning

Who is this for? The Ninja PB051ST is a fit for apartment dwellers, commuters, and small-household coffee fans who want flexible brewing without a large machine. If you alternate between pods and grounds, like multiple cup sizes, or enjoy milk-based coffeehouse drinks at home, this compact, feature-rich brewer delivers the adaptability and convenience you need.