Laboratory experiments were accomplished to determine the influence of soybean variety npon the taste and flavor of soy milk prepared according to the so-called "DEC Method", modified, and the results are here reported. A special panel was organized with the personnel working at the Instituto Agronômico of Campinas, composed of 25 people who never had been submitted to such a test before and the results expressed in a numerical scale. A preliminary test to evaluate the influence of lhe skin (seed coat) on the tasle of soy milk has proved that for the case of the variety Mojiana the removal of the skin was necessary to approach to standard technique. The experimental data showed that taste improves when seed coats are removed right after maceration. These results were statistically significant. There was not any significant difference among the treatments in the laboratory trials with soy milk prepared from four different soybean varieties (Rio Grande, Ahura, Mojiana and Chosen) as far as taste and aroma are concerned, although the Rio Grande appeared as the leading variety in the average of both judgements.