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How Filter Paper Influences Your Coffee Extraction

How Filter Paper Influences Your Coffee Extraction

Petra Jones |

When it comes to brewing the perfect cup of coffee, every detail matters. From the grind size to the water temperature, each element plays a crucial role in the final flavour of your coffee. One often-overlooked component is the filter paper used in your coffee maker. But how exactly does filter paper influence your coffee extraction?

Filter Pores Size Matters

The pores in filter paper determine how quickly water flows through it during the brewing process. Finer filter paper with smaller pores will result in a slower extraction, allowing for more flavour compounds to be extracted from the coffee grounds. On the other hand, coarser filter paper with larger pores will lead to a faster extraction, resulting in a lighter-bodied cup of coffee.

Some paper filters, such as Melitta Original Filter Papers are cleverly designed with 3 different zones for the optimal coffee extraction. The top zone with more pores prevents bitterness, while the middle zone supports even and consistent brewing and refines the aroma of your coffee The lower zone with the least amount of pores, the so-called “pre-brewing zone” unfolds the first aromas in your coffee.

Melitta filter paper

Filter Paper Composition

Filter paper can be made from various materials such as cellulose, hemp, or bamboo. Each material has its own unique characteristics that can impact the flavour of your coffee. For example, some filter papers may impart a papery taste to your brew if not properly rinsed before use. It's essential to choose a high-quality filter paper that is free from any unwanted flavours or chemicals.

Thickness and Density

In addition to pore size and material, the thickness and density of filter paper can also affect the extraction process. Brown paper filters, typically thicker and denser than white paper filters, can result in a more robust and full-bodied cup of coffee due to their slower extraction rate. The increased thickness allows for a more controlled flow of water through the grounds, giving the coffee more time to extract flavour compounds and oils.

To maximise the flavour potential of your coffee, it's crucial to experiment with different types of filter paper to find the perfect match for your taste preferences. 


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