To provide a product made from soybean, that can be used in solid food such as cake.SOLUTION: Provided are: a formable lactic acid fermented soybean product obtained by fermenting a pulverized soybean product that does not exhibit fluidity with lactic acid bacterium; a lactic acid fermented soybean product that is subjected to retort treatment, is gluten free, and also is low in saccharide; and a lactic acid fermented soybean product in which the pulverized soybean product is any of soybean whole grain powder, water dispersion thereof (Go), soybean milk refuse (Okara), dried Okara, and soybean milk.SELECTED DRAWING: Figure 1【課題】ケーキなどの固形食品に利用できる大豆を原料とする生成物の提供。【解決手段】流動性を示さない大豆粉砕物を乳酸菌で発酵させた成形性のある乳酸発酵大豆生成物。レトルト処理され、グルテンフリーであり、また、低糖質である乳酸発酵大豆生成物。大豆粉砕物が、大豆全粒粉、呉、おから、乾燥おから、豆乳のいずれかである、乳酸発酵大豆生成物。【選択図】図1