When I first started using my Breville (or Sage) espresso machine at home, I quickly realized that making a perfect single shot was more complicated than simply halving the amount of coffee used for a double shot. My machine came with two filter baskets: one for single shots and one for double shots. Pulling a double shot was straightforward, but achieving the ideal single shot required a bit more finesse.
Understanding the Differences Between Single and Double Baskets
One of the first distinctions I noticed was the shape of the single basket compared to the double. Unlike the flat bottom of the double basket, the single basket has a tapered or conical design. Although this might seem like a minor variation, it has a significant effect on how water flows through the coffee grounds. The narrower base of the single basket often leads to uneven extraction, causing water to flow more quickly through the center, which can lead to channeling. This can result in an unbalanced shot, where some parts are under-extracted while others are over-extracted.
Consequently, I found it challenging to achieve the rich, full-bodied flavor I desired from a single shot. Comparing a single shot to a double shot split between two cups, the double always delivered a deeper, fuller taste and a better overall balance.
Fine-Tuning Your Technique for the Single Basket
Determined to master the single shot, I experimented with a few adjustments that made all the difference:
Increase the Coffee Dose
One game-changing tweak was adjusting the coffee dose. Initially, I assumed I should use half the amount of coffee I'd use for a double shot (around 18 grams). However, this led to shots that pulled too quickly and produced flat, lackluster flavors. Increasing the dose to roughly 10 grams resulted in a more balanced extraction time and vastly improved the flavor. This minor adjustment brought more depth and complexity to my single shots.
Adjust the Grind Size
Another key adjustment was refining the grind size. My first attempts with the single basket resulted in shots that brewed too quickly, which indicated that I needed a finer grind. After dialing my grinder a few notches finer, I noticed significant improvements in shot timing and flavor balance. A finer grind helps slow the water flow, promoting even extraction and delivering a more flavorful espresso.
Use a Scale and Stick to a 1:2 Brew Ratio
Using a scale became indispensable for maintaining consistency in both the coffee dose and the espresso output. I aimed for a 1:2 brew ratio, which meant that for every gram of ground coffee, I pulled twice the weight in liquid espresso. For 10 grams of coffee, I aimed for around 20 grams of espresso. This ratio helped me avoid weak or overly diluted shots, consistently yielding a balanced, concentrated espresso.
Remember to Purge the Grinder
Switching between the single and double baskets also made it crucial to pay attention to the grinder. After adjusting the grind for a single shot, I always purged the grinder of any old grounds that could affect consistency. This step is particularly important if you're frequently alternating between basket sizes, as leftover grounds can disrupt the grind and compromise shot quality.
Challenges and Rewards of Using the Single Basket
Using the single basket was definitely more challenging than the double, but once I got the hang of it, it was worth the effort. It demanded more precision and patience, but the reward was a clean, concentrated shot that worked perfectly in milk-based drinks like cappuccinos or lattes, where I didn't want the coffee to overpower the milk.
For those who prefer a single shot in milk drinks or enjoy a lighter, more delicate espresso, it's worth experimenting with these adjustments. Every machine and palate is unique, so feel free to adjust grind sizes, doses, and extraction times until you discover what works best for you.
Final Thoughts
Mastering the single basket with a Breville or Sage espresso machine can be a bit tricky initially, especially due to the basket's tapered shape, which often requires adjusting both the dose and grind size to avoid uneven extraction. However, with persistence and some experimentation, it's absolutely possible to produce a delicious, well-balanced single shot. Learning to use the single basket has not only improved my espresso-making skills but also made me a more confident home barista—and I believe it can do the same for you.
Happy brewing!