Soy breads were developed by different pretreatments of soy flour. The optimal soy bread quality, with the highest loaf volume and softest texture, was made by using germinated soy flour. On the other hand, heating methods, such as steaming and roasting, were effective in terms of improving flavour and best consumer sensory score, despite the lower loaf volume. However, improved loaf volume and soft texture were attained by adding HPMC to roasted soy flour, which also offered an extra source of dietary fibre.