HARIO HU-0830: Japan-Made Heatproof Glass Coffee Cups

If you’ve ever tried comparing two coffees side by side and found your regular mug just doesn’t cut it, you’re not alone. A proper tasting setup calls for identical, neutral vessels—clear, non-reactive, and with consistent dimensions. That’s where HARIO’s heat-resistant glass comes in.

The HARIO HU-0830 is a two-piece set of transparent, heatproof glass cups made in Japan. Each holds up to 170ml when filled to the brim, measures 86mm in diameter and 63mm in height, and is designed for precise coffee evaluation.

What Is the HARIO HU-0830?

The HU-0830 is part of HARIO’s lineup of heat-resistant glass products, specifically crafted as a two-cup set. Both cups share the same dimensions: a diameter of 86mm and a height of 63mm. They are manufactured from durable, heatproof glass and are completely transparent. The set is produced in Japan, ensuring consistent quality and design integrity. While labelled with a capacity range of 101–200ml, each cup reaches a full water capacity of 170ml—ideal for coffee tasting or casual drinking without visual obstruction or flavour interference.

Why Use Transparent Heatproof Coffee Cups?

When evaluating coffee, especially during cuppings or side-by-side comparisons, the vessel matters. Coloured or opaque cups can mask crema appearance, coffee clarity, and even subtle colour differences between brews. Heatproof glass allows you to serve coffee at optimal temperatures without risking burns or altering the drinking experience. The neutral, transparent design ensures you experience the coffee as it is—without the cup influencing your perception of colour, aroma, or taste. These qualities make the HU-0830 ideal for both home brewers and professionals conducting tastings.

Key Specifications of the HARIO HU-0830

• Brand: HARIO
• Model: HU-0830
• Material: Heat-resistant glass
• Origin: Japan
• Cup Shape: Circular
• Colour: Clear
• Capacity (per cup): Up to 170ml when full
• Capacity Range (labelled): 101–200ml
• Dimensions (per cup): Diameter 86mm × Height 63mm
• Set Includes: Two cups

These specifications ensure the cups are suitable not only for black coffee but also for teas or other beverages where clarity and heat resistance are beneficial. The 86mm diameter offers enough surface area for proper aroma release, while the 63mm height provides a comfortable drinking profile.

Frequently Asked Questions

Are the HARIO HU-0830 cups microwave or dishwasher safe?

The HARIO HU-0830 cups are made from heat-resistant glass, which typically means they can handle hot liquids and are microwave safe. However, HARIO does not explicitly state dishwasher safety in the provided details. For longevity, hand washing is recommended, especially to preserve clarity and avoid scratching.

What is the actual volume of the HU-0830 cups?

Although the product is labelled with a general capacity range of 101–200ml, each HARIO HU-0830 cup holds up to 170ml when filled to the maximum level. This is the verified full water capacity according to the technical details.

Why are the cups clear instead of white or tinted?

The clear, transparent design of the HU-0830 allows for an unobstructed view of the coffee’s colour, clarity, and crema. This is especially important for coffee tasting, cupping, or comparing different brews, where visual assessment is part of the evaluation process.

Can I use the HU-0830 for espresso or other brewed coffee?

Yes, the HU-0830 can be used for any coffee preparation method, including espresso, pour-over, or French press. Its 170ml capacity is well-suited for a single serving of espresso or a small cup of filtered coffee. The heatproof glass also makes it suitable for serving hot drinks.

Are these cups part of a larger HARIO coffee set?

The HU-0830 is sold as a standalone two-piece set. While HARIO offers many complementary products in their glassware and coffee equipment lines, the HU-0830 itself consists of just the two identical cups as described.

Recommended FrontStreet Beans for Cupping

For use with your HARIO HU-0830 cups, try FrontStreet Coffee’s Ethiopia Humbera—known for its vibrant citrus, jasmine, and tropical fruit notes—or the Kenya Little Tomato, which delivers bold blackcurrant, winey acidity, and sweet tomato-like brightness. Both single origins shine in transparent cups, letting you observe clarity and crema while highlighting distinct flavour profiles. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.