The final acidity achieved in the present study was lower than that
achieved in citron (6.8%) (Kang, Jang, & Kim, 2006) but similar to
garlic vinegar (4.9%) (Ko, Hur, & Choi,1998). However, garlic vinegar
takes twice as long as the H. erinaceus acetic fermentation to reach
similar final acidity. The acidity differences in various vinegars could
be attributed to variations in the rawmaterials, the amount of acetic
acid bacteria added, as well as fermentation time and dilution.