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CONA Coffee Maker Review: For clean, all-glass filter coffee

CONA 'Size D-Genius All-Glass' Coffee Maker
4.5
[Iconic Industrial Design]  Classic, patented siphon brewer design originating 1910; timeless aesthetic and proven brewing performance.
[Renowned Designer Legacy]  Designed by Abram Games: 'Maximum Meaning, Minimum Means' — striking, functional design pedigree.
[Made in Europe Quality]  Solid materials, durable construction, and minimal wear for long-lasting performance.
[All-Glass Brewing]  Brew touches only glass for pure flavor; solid glass filter rod eliminates paper or cloth.
[Sustainable, Serviceable Parts]  Made from recyclable materials; parts replaceable and uses denatured alcohol burner for efficiency.
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Kitchen coffee maker promising clean, transparent filter coffee through an all-glass method, CONA Coffee Maker. Ideal for design-minded coffee lovers who enjoy the ritual of table-side brewing and visible extraction. Is the extra care and ritual worth it for everyday use?

⚡ At a Glance
  • Brewing Quality: Clean, pure flavour with clear aromatic definition and balanced extraction
  • Best for: Design-conscious home baristas who prize ritual and flavour clarity
  • Not ideal for: People wanting instant, fully automated or high-volume coffee preparation

All-glass brewing path ensures the brew touches only glass throughout the process. Capacity is 1.1 litre, suitable for up to eight cups.


Pure, untainted flavour - with all-glass brewing path

All-glass method keeps the brew in contact only with glass components, including funnel and stand, while the transparent setup makes extraction visible. Funnel placement signals when the process has reached the correct stage.

Clean-tasting coffee highlights subtle aromatics, making single-origin and lightly roasted beans easier to appreciate.

No disposable filters, easier upkeep - thanks to a solid glass filter rod

Solid glass filter rod traps grounds mechanically so no paper or cloth filter is required. The rod is washable and does not absorb oils or flavours.

Reduced waste and simpler cleaning, with consistent filtration and no ongoing filter replacements.

Designed for longevity and repair - with replaceable parts and durable materials

Constructed from glass, metal, rubber and duraplast, with all parts designed to be replaceable and serviced. Manufacture in Europe underscores a focus on quality materials.

Low long-term ownership costs and straightforward maintenance make the brewer suitable as a long-lasting kitchen piece.

✨ The 4 Key Reasons for CONA Coffee Maker
  1. All-glass brewing path - Ensures brew touches only glass, preserving pure flavour
  2. Solid glass filter rod - Eliminates paper filters, reduces waste and ongoing expenses
  3. Replaceable parts & durable materials - Extends usable life through straightforward part replacement and repair
  4. Denatured alcohol burner - Provides a compact heat source for controlled siphon brewing
📋 Technical Details at a Glance
  • Category: Coffee maker
  • Capacity: 1.1 litre
  • Brewing method: All-glass siphon-style brewing
  • Materials: Glass, metal, rubber, duraplast
  • Filter type: Solid glass filter rod, no paper or cloth
❓ Frequently Asked Questions

Q: How many cups can it make in one session?

A: Holds 1.1 litre, sufficient for up to eight cups or fewer depending on cup size.

Q: Do I need to use paper or cloth filters?

A: No, a solid glass filter rod captures the grounds so paper or cloth filters are unnecessary.

Q: What fuel does the burner use?

A: Burner uses denatured alcohol, specified as bio-ethanol or methylated spirit.

🏆 Our Verdict

Suitable for enthusiasts who value ritual, flavour clarity and considered design. The all-glass brewing path and solid glass filter rod deliver a pure, visually engaging brewing experience. While the setup demands more care than automatic machines, replaceable parts and durable materials offer strong long-term value.