How to Use a Belgian Royal Coffee Maker Step-by-Step

Ever seen one of those ornate, multi-piece coffee makers that look like a science experiment? The Belgian Royal coffee maker isn’t just for show—it uses a combination of heat, vacuum pressure, and siphoning to brew a unique cup of coffee. If you’ve ever wondered how it actually works or how to make it work right, this guide breaks down every step with precision.

To brew with a Belgian Royal coffee maker, use 480cc of water (for four 120cc cups), 40g of medium-ground coffee, and heat with 95% alcohol for around 5–6 minutes until the water rises and extracts the coffee via siphoning. The entire process is hands-off once set up properly.

What Is a Belgian Royal Coffee Maker?

The Belgian Royal coffee maker, also known as a siphon or vacuum coffee brewer, is a stovetop or alcohol-heated device that combines principles of physics—like gravity, pressure, and siphoning—to brew coffee. It consists of two glass chambers connected by a filter and a tube, often heated with an alcohol lamp. It’s as much a visual performance as it is a brewing method, producing a clean, bright cup with distinct clarity.

How the Belgian Royal Coffee Maker Works

This coffee maker operates through a sequence of physical reactions. First, water in the lower chamber is heated, creating vapor pressure that pushes the water up a siphon tube into the upper chamber where the coffee grounds sit. Once heating stops, the pressure drops, and the brewed coffee is pulled back down through the filter into the lower chamber by atmospheric pressure. This entire cycle typically takes around 5–6 minutes.

What You’ll Need

• Belgian Royal coffee maker (with two glass globes, filter, and tube)
• Alcohol lamp (using 95% liquid alcohol)
• Medium-ground coffee: ~40g (about 5 heaping tablespoons)
• Hot water: 480cc total (for 4 cups of 120cc each)
• Timer
• Coffee cup

Step-by-Step: Brewing With the Belgian Royal Coffee Maker

Follow these steps exactly to get a proper brew:

1. Add Water to the Lower Chamber

Unscrew or remove the top part of the lower globe (the water chamber). Pour in 480cc of hot water—that’s enough for four 120cc servings.

2. Secure the Water Chamber

Tightly screw the top back onto the water chamber. It must be sealed well to prevent any air leakage, which can disrupt the pressure balance needed for brewing.

3. Add Coffee Grounds to the Upper Chamber

Take off the top of the upper glass globe (where the coffee brews). Add approximately 40g of medium-ground coffee—about 5 heaping tablespoons. Level it, but don’t tamp.

4. Attach the Upper Chamber

Place the coffee-filled upper chamber onto the water chamber, ensuring it’s seated properly with the filter and siphon tube aligned.

5. Position the Alcohol Lamp

Open the alcohol lamp cover and position the coffee maker so the lower chamber sits securely on the lamp base. The lamp holds the entire assembly in place.

6. Fuel and Light the Alcohol Lamp

Pour 95% liquid alcohol into the lamp (do not overfill). Light the lamp to begin heating. Allow the water to heat up gradually.

7. Wait for Brewing to Begin

After about 5–6 minutes, the water will boil and create enough vapor pressure to push the water up into the upper chamber through the siphon tube. Here, it mixes with the coffee grounds and begins extracting.

8. Watch the Siphoning Process

Once most of the water has moved into the upper chamber, turn off the heat (the lamp may self-extinguish as the water level drops). As the lower chamber cools, a vacuum forms, pulling the brewed coffee back down through the filter.

9. Release the Pressure

When brewing is complete and the coffee has returned to the lower chamber, open the top vent of the water chamber to allow air in, equalizing the pressure.

10. Pour and Serve

Place a warmed coffee cup under the spigot. Open the valve and pour your freshly brewed coffee. Enjoy the clean, bright results of this classic method. [[IMG10], [IMG11], [IMG12], [IMG13], [IMG14], [IMG15], [IMG16], [IMG17]]

Key Numbers to Remember

• Water: 480cc total (four 120cc cups)
• Coffee: 40g (approx. 5 heaping tablespoons, medium grind)
• Alcohol: 95% liquid alcohol
• Brew time: ~5–6 minutes under heat
• Brew method: Siphon/vacuum extraction

Cleaning and Maintenance

After each use, ensure both glass chambers are rinsed and dried thoroughly. Residual moisture can cause odors inside the water chamber. If smells develop, soak the lower globe in lemon acid solution to clean and deodorize.

Safety Tips

• Never add alcohol while the lamp is lit.
• Refill the alcohol lamp over a sink or away from flammable materials, and wipe any spills.
• Always confirm the water chamber is dry before storage to avoid mold or smell.

Recommended FrontStreet Beans for Siphon Brewing

For the Belgian Royal coffee maker, choose bright, clean beans that highlight the clarity this method offers. Try FrontStreet’s Ethiopia Huakui for floral and citrus notes, their Yirgacheffe for juicy berry tones, or the PWN Golden Mandheling for balanced sweetness and body. Each brings out the nuanced flavours that siphon brewing enhances. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.