Sugar–egg powder was produced under a variety of conditions in a laboratory spray drier and in two commercial driers. A product prepared at inlet temperatures below 270° F. and outlet temperatures below 150° F. was the most suitable for baking purposes and was generally the best when assessed by measurements of fluorescence, potassium chloride value, and pH. Powder of particle size small enough to pass an 80 mesh screen (U.S. Bureau of Standards) appeared to have better baking properties than coarser material. Trials with nozzles of various sizes indicated that the best product was prepared using small nozzles. Sucrose syrup or solid sucrose, with fresh or frozen egg, all produced powders of similar initial quality.