What primarily limits the longevity of Metal Filters compared to paper or cloth options?
Answer
Physical wear or corrosion, as the material does not absorb oils or retain flavor compounds.
Metal filters, often made of stainless steel mesh, are considered the longest-lasting option because their base material resists chemical absorption of brewing residues. Unlike paper and cloth, metal does not retain coffee oils or flavor compounds, meaning they do not become rancid or sour from saturation. Consequently, their lifespan is functionally indefinite and is only constrained by external physical factors, such as mechanical damage or, rarely with proper care, corrosion. This structural resilience contrasts sharply with organic filters whose lifespan is limited by material degradation or residue buildup.
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