OVALWARE Cold Brew Coffee Maker

AttributeValue
SealBPA-Free Silicone Airtight Seal
Capacity1.0L / 34oz
MaterialBorosilicate Glass, 18/8 Stainless Steel
Filter TypeSuperfine Laser-Cut Stainless Steel
CompatibilityCold Brew Coffee, Hot & Iced Tea

The OVALWARE RJ3 Cold Brew Coffee Maker is designed for coffee lovers who want smoother, less acidic brews with professional‑grade quality at home.

OVALWARE Cold Brew Coffee Maker Overview

The RJ3 model by OVALWARE is a versatile brewer that caters to both coffee and tea drinkers. Its airtight design ensures freshness, while the removable stainless steel filter makes brewing simple and efficient.

Key highlights of the RJ3 Cold Brew Maker:

  • Versatile Brewing – Works for coffee and tea.
  • Airtight Seal – Locks in flavor and freshness.
  • Durable Materials – Borosilicate glass and stainless steel.
  • Compact Design – Fits easily in fridge shelves.
  • User-Friendly – Dishwasher safe and easy to clean.

Together, these features make the RJ3 a reliable choice for home baristas who want professional results without complicated equipment.

Capacity & Size of the RJ3 Cold Brew Maker

The RJ3 comes in a 1.0L/34oz size, making it ideal for personal use or small households. Its slim profile is engineered to fit neatly inside refrigerator shelves, ensuring convenience and practicality.

Capacity and design details:

  • 1.0L/34oz Pitcher – Perfect for daily brewing needs.
  • Compact Dimensions – Saves space in the fridge.
  • Easy-Access Handle – Comfortable grip for pouring.
  • Lightweight Build – Easy to carry and store.
  • Balanced Design – Stable base with non-slip cushion.

This capacity strikes a balance between portability and practicality, offering enough concentrate for multiple servings while remaining easy to handle.

OVALWARE Cold Brew Coffee Maker

Premium Borosilicate Glass Construction

The RJ3 is crafted from extra-thick borosilicate glass, known for its durability and resistance to thermal shock. This ensures safety and longevity, even with frequent use.

Construction highlights:

  • Lab-Tested Glass – Proven durability and safety.
  • Crystal-Clear Design – Elegant look for serving.
  • Non-Toxic Materials – BPA-free components.
  • Thick Walls – Extra protection against cracks.
  • Professional Finish – Sleek and modern appearance.

This premium construction not only enhances durability but also adds aesthetic appeal, making the RJ3 suitable for both brewing and serving.

Stainless Steel Filter & Airtight Seal

The RJ3 features a superfine laser-cut stainless steel filter that ensures smooth coffee without sediment. Its airtight seal locks in freshness for up to two weeks.

Filter and seal features:

  • 18/8 Stainless Steel – Rust-free and durable.
  • Superfine Mesh – Prevents grounds from escaping.
  • Medical-Grade Lid Cap – Ensures hygiene and safety.
  • Silicone Airtight Seal – Preserves flavor.
  • Long-Lasting Freshness – Keeps concentrate fresh for 2 weeks.

By combining a precision‑engineered filter with a secure airtight seal, the RJ3 ensures every batch of cold brew is clean, flavorful, and long‑lasting.

Cold Brew Coffee Benefits

Cold brew coffee has become increasingly popular among home brewers and café enthusiasts because of its unique taste profile and health advantages. Unlike hot brewing, which extracts oils and acids quickly, cold brewing uses time and cool water to create a smoother, less acidic concentrate.

Benefits of cold brew:

  • Lower Acidity – 70% less acidic than hot coffee.
  • Richer Flavor – Smooth, bold taste.
  • Versatile Concentrate – Mix with milk, water, or syrups.
  • Long Shelf Life – Stays fresh for up to 2 weeks.
  • Health-Friendly – Easier on the stomach.

Cold brew is not just a trend—it’s a brewing method that enhances flavor, reduces acidity, and offers flexibility for creative drinks.

Brewing Tea with OVALWARE RJ3

The RJ3 isn’t limited to coffee—it also excels at brewing tea. Its filter accommodates both loose-leaf tea and tea bags, offering flexibility for hot or cold infusions.

Tea brewing features:

  • Loose-Leaf Compatibility – Perfect for artisanal teas.
  • Tea Bag Friendly – Works with standard tea bags.
  • Hot Brewing Option – Functions like a teapot.
  • Cold Infusion – Refreshing iced tea in the fridge.
  • Hosting Versatility – Ideal for serving guests.

By offering both hot and cold brewing options, the RJ3 expands beyond coffee to become a multi‑purpose beverage maker. This versatility makes it ideal for families or individuals who enjoy experimenting with different flavors.

Ease of Use & Cleaning Features

The RJ3 is designed for convenience, with dishwasher-safe parts and a non-slip base for added protection. Its simple operation makes brewing effortless.

Ease-of-use highlights:

  • Dishwasher Safe – Easy cleaning after use.
  • Non-Slip Base – Extra stability and protection.
  • Simple Operation – Just mix and pour.
  • Removable Strainer – Easy maintenance.
  • Compact Storage – Fits neatly in kitchen spaces.

The combination of dishwasher‑safe parts and a removable filter reduces cleaning time, while the non‑slip base adds an extra layer of protection for everyday use.

OVALWARE RJ3 Pros, Cons & Final Verdict

Every coffee maker has strengths and weaknesses, and the OVALWARE RJ3 Cold Brew Coffee Maker is no exception. By weighing its pros and cons, you can decide if it’s the right fit for your brewing style.

Pros:

  • Durable Construction – Borosilicate glass and stainless steel.
  • Versatile Brewing – Works for coffee and tea.
  • Freshness Lock – Airtight seal for 2 weeks.
  • User-Friendly Design – Easy to use and clean.

Cons:

  • Limited Capacity – Best for small households.
  • Manual Brewing – Requires coarse grind preparation.

Final Verdict: The OVALWARE RJ3 Cold Brew Coffee Maker is a premium choice for home brewers who value quality, versatility, and freshness. While its capacity may not suit large families, its design and performance make it one of the most reliable cold brew makers available today.