Soyghurt was a probiotic drink made by adding a lactic acid bacteria (LAB) into the soy milk. In general, cultures used was Lactobacillus bulgaricus and Streptococcus thermophilus. This study used Lactobacillus plantarum isolated from soybean solid waste of soymilk prouction so it was assumed to have good growth so as to produce good quality soyghurt. The aim of this research was to get the bes…