The invention relates to a protein powder which contains at least one protein source and a stabilizer, selected from esterified pectin and/or carboxymethyl cellulose, which is obtainable by mixing a protein source with a stabilizer, heating the mixture, homogenizing the mixture, and drying the mixture, thereby obtaining a powder. The invention also relates to a method for producing said protein powder, a method for producing a protein-containing drink using said protein powder and a protein-containing drink obtained by said method.