Stabilizers comprising co-processed MCC and a hydrocolloid, edible compositions comprising the stabilizers, and processes for making the edible compositions are described. Edible compositions may be prepared from a stabilizer comprising MCC and a hydrocolloid, along with a protein source and/or juice. Compositions of the invention may include low pH beverages comprising the MCC stabilizer, a protein source and/or a fruit or vegetable juice or other fruit-flavored liquid, optionally with an additional amount of hydrocolloid and acidulant, sweetener, buffering agents, pH modifiers, or stabilizing salts.