Apparatus to filter liquor includes at least one woven layer. The layer comprises strands that are naturally produced by a living thing, include domains of hydrophilic amino acids, include domains of hydrophobic amino acids, have a triangular cross section to produce turbulent liquid flow, have weft threads parallel to other weft threads, have warp threads parallel to other warp threads at an angle to the weft threads, have at least one of the pair consisting of negatively charged amino acid and positively charged amino acids, and have a denier in the range of 0.75 to 1.25.