Eupa TSK-1817B 1819A Single-Layer Double Cup Filter Basket

If you’ve ever pulled a shot and noticed uneven extraction—channeling, weak crema, or bitter notes—it might not be your beans or technique. Often, the real culprit is your portafilter basket: clogged, worn, or simply the wrong design. Many beginner-friendly ‘pressurized’ baskets hide flaws, but they limit grind flexibility and can frustrate as you level up. What if you could switch easily between single and double shots, use a finer grind for better flavor, and avoid the common pitfall of baked-on coffee oils clogging your basket over time?

The Eupa TSK-1817B / 1819A single-layer, non-pressurized double cup filter basket solves those problems. Made from 304 stainless steel, it measures 53.4mm in diameter and 20.2mm in height, holds around 12 grams of coffee, and features clear dose markings for both single and double shots. Designed for finer grinds, it promotes even extractions without the risk of long-term clogging.

What Is This Basket?

This is a single-layer (non-pressurized) espresso filter basket designed for dual use: one or two shots. With an outer diameter of 53.4mm and a height of 20.2mm, it’s a standard commercial-size basket compatible with most home and semi-commercial machines. Its capacity is approximately 12 grams of coffee—ideal for a standard double shot. Most importantly, it's not pressurized, meaning it relies on proper grind size, distribution, and tamping to create resistance and extraction, rather than forcing pressure through small holes.

Why Use a Non-Pressurized Basket?

Pressurized baskets work by using internal barriers to slow water flow, which helps produce crema even with poorly ground or tamped coffee—but they often restrict flavor clarity and limit grind adjustments. A non-pressurized basket like this one, on the other hand, lets you control extraction variables properly. That means you can use a finer grind for enhanced sweetness and body, dial in your shots more precisely, and achieve a better crema through proper technique rather than artificial restriction. Over time, many users find they get more consistent results and fewer issues with channeling.

Key Features and Benefits

• Material: Made from durable 304 stainless steel, which resists rust and maintains temperature stability during extraction.
• Dimensions: 53.4mm outer diameter and 20.2mm height—fits most standard single and double portafilters.
• Capacity: Holds around 12 grams of coffee, suitable for double shots or adjustable single shots.
• Dual Dose Markings: Clear markings inside the basket indicate both single and double shot coffee doses for easy dialing in.
• Non-Pressurized Design: Works best with finely ground coffee and proper tamping, allowing for optimal extraction control.
• Reduced Clogging: The single-layer design doesn’t trap coffee oils and residue as easily as pressurized baskets, so it stays cleaner for longer and resists the buildup that can lead to channeling.

Using the Basket for Best Results

To get the most out of the Eupa TSK-1817B / 1819A basket, use a fine to medium-fine grind size—finer than what you’d typically use in a pressurized basket. Distribute the coffee evenly in the portafilter, aiming for level and levelled puck preparation. Tamp with consistent pressure (around 30 pounds or 13-15 kg), and aim for a brew temperature between 90–96°C (194–205°F) with a brew ratio around 1:2 for espresso (e.g., 18g in, 36g out in ~25–30 seconds). The finer grind helps improve extraction efficiency and flavor complexity, especially when paired with fresh, high-quality beans.

Frequently Asked Questions

Is this basket compatible with my home espresso machine?

Yes, as long as your machine uses a standard 53.4mm portafilter. This is a common commercial size found in many home espresso machines, including models from brands like Breville, De'Longhi, and Rancilio. Always check your portafilter’s diameter and basket height (20.2mm) if you're unsure.

Do I need to use a special grinder for this basket?

No special grinder is required, but you’ll want one that can grind fine enough for espresso—typically in the range of 1:10 to 1:12 (finer than what pressurized baskets need). A burr grinder with precise settings is ideal for dialing in the right grind size.

What’s the advantage of a non-pressurized basket over a pressurized one?

Non-pressurized baskets allow you to control extraction variables like grind size, dose, and tamp pressure, leading to better flavor clarity, sweetness, and crema. Pressurized baskets rely on restriction to produce crema, which can mask inconsistencies in grind quality or tamping.

How do I clean this basket to prevent clogging?

Clean it after every use by backflushing with water (if your machine allows) and regularly remove coffee oils with a brush or rinse. Over time, soak it in a mild backflush detergent if needed. The single-layer design resists clogging better than pressurized baskets, but regular maintenance ensures peak performance.

Can I use this for single or double shots?

Yes. The basket includes clear internal markings for both single and double shot doses, making it easy to switch between one or two shots based on your needs.

Recommended FrontStreet Coffee Blends for Espresso

For the Eupa TSK-1817B / 1819A basket, try FrontStreet Coffee’s Classic Blend—a well-balanced espresso with outstanding crema, great for milk drinks or straight shots. For a richer, more affordable option, Black Cocoa Blend offers bold flavors and strong crema at a great price. Both blends are optimized for standard espresso brewing and perform well with finely ground coffee in non-pressurized baskets. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.