This invention relates to an apparatus and a method for producing a mix of a first type of food products and at least one second type of food products so that the mix fulfils at least two target criteria including weight ratio criterion indicating the weight ratio between the first and the at least one second type of food products in the mix and lean/fat ratio criterion of the mix. At least three controllable in-feed channels are arranged at an in- feed end of at least one conveyor and supply separate streams of the first and the at least one second food products. At least one of the in- feed channels supplies the first type of food products and at least two of the in-feed channels supply the at least one second type of food products. The at least two of in- feed channels supplying the at least one second type of food products being distinguished via different lean/fat ratio estimate. At least one lean/fat ratio measuring means determines the lean/fat ratio of the food products, and a weight determining device determines the weight of the food products. A control unit utilizes the determined weight of food products and the measured lean/fat ratio of the food products as operation parameters in operating the in-feeding of the at least three controllable in-feed channels so that the mix fulfills the at least two target criteria.