Provided is a co-attrited MCC/CMC stabilizer composition containing MCC made from non-dissolving cellulose pulps that is useful for stabilizing plant protein based drinks. Also provided are plant protein drink compositions stabilized using the co-attrited MCC/CMC stabilizer composition containing MCC made from non-dissolving cellulose pulps. Also provided are methods of stabilizing plant protein drink compositions using the co-attrited MCC/CMC stabilizer composition containing MCC made from non-dissolving cellulose pulps.