What's the difference between the four filter baskets?
There are four different types of filter baskets you can use in your KitchenAid Espresso Machine: one shot or two shot, single wall or double wall.
Choosing the size of your portafilter basket
The size of the coffee filter basket you choose depends on which kind of espresso drink you fancy. If you’re drinking pure espresso, you’ll probably opt for a single-shot basket. If you fancy a cappuccino or a latte, they can be with either a single or a double shot, topped with steamed milk and milk foam. The flat white is traditionally made with a double shot basket.
Then, you need to choose between a single-wall or double-wall basket.
Should I choose a double or single wall filter basket?
So, as well as single or double, shot, you can choose between double wall (or pressurised) baskets and single wall (unpressurised) baskets. Your choice depends on the level of control you want over the brew process. Here’s how it works:
Double wall baskets - better for beginners
They have the usual mesh base, plus another 'wall' that acts like a holding area, with a small hole at the bottom. Extra pressure builds to force the coffee through the hole, ensuring the water finds its way through all the coffee grounds. This means that pre-ground coffee, a less precise grind, or a slightly uneven tamp, can still give you good extraction, and a guaranteed delicious cup of espresso.
Single wall baskets - the expert's choice
Without the second wall, the only thing creating brewing pressure is the coffee grinds and how you tamp them – so precision in both is key. This type of filter basket allows more control. You can experiment to find the best grind for your machine and beans, to give the fullest flavours and richness.
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