The Effect of Age Of Cassava Tapai (Manihot esculenta) and Concentration on The Characteristics of Cassava Tapai Flour : Pengaruh Umur Tape Singkong (Manihot esculenta) dan Konsentrasi Ragi Terhadap Karakteristik Tepung Tape Singkong . jtfat. 2021;1(02):30-37. doi:10.21070/jtfat.v1i02.1571