The present application relates to a blender unit (2) and method for blending materials. The blender unit (2) comprises: - a number of material hoppers (4, 6) for individual base materials of a base segment of the recipe, the hoppers (4, 6) having an inlet and an outlet; - a weighing bin (10) that is connected to the outlets of the material hoppers (4, 6) and is configured for weighing the base materials of the base recipe segment; - a mixing chamber (14) having an outlet and a mixing element configured for mixing the base materials received from the weighing bin (10) into a mixture of base materials; - an in-line dosing chamber (28) that is directly connected to the outlet of the mixing chamber (14) and is provided with a number of dosing elements configured for dosing a number of additives of an additive segment of the recipe into the mixture of base materials received from the mixing chamber (14), and the in-line dosing chamber (28) having a blender outlet (18); - a number of weight feeders (20, 22) configured for providing the one of more additives of the additive recipe segment to the in-line dosing chamber (28); and - a controller configured for controlling the outlet of the material hoppers (4, 6), weighing bin (10), mixing element, and dosing elements such that a mixture according to the recipe can be provided at the blender unit (2).