An apparatus for preparing an alimentary granular soft caviar similar to black granular caviar is described. The grains of caviar are by supplying a mixture containing an albuminous colloid, water, and alimentary gelatin under pressure though gauged channels to a cavity with heated vegetable oil in its upper section, separating and washing the grains, tanning the grains in a tea extract, water washing, washing with salt solution, introducing to the product of a gustatory component and mixing the grains with vegetable oil. The apparatus includes a cavity containing the initial mixture, outlet pipes with stream-forming heads, a source of gas pressure, a cylindrical granulating cavity for forming grains of the product, a nipple for draining excess forming liquid, water jackets around the cavity and the granulating cavity, and a receptacle at the bottom of the granulating cavity for accumulation of the produced grains. The apparatus also contains a compressor supplying impulse gas into the granulating cavity through pipes located at the top of the granulating cavity oriented horizontally to the center of the granulating cavity. The top of the granulating cavity is wider than the body of the granulating cavity, in the shape of a funnel, and is enclosed by a heating unit, connected to a controller.