The present invention provides a process for the manufacture of a dairy product or nutritional formula, such as an infant formula, which has a fat particle distribution with resembles human breast milk. The process comprises mixing vegetable fat, protein and carbohydrates in a high shear rotor stator mixer and subsequently subjecting said mixture to homogenization so as to provide a composition with a monomodal fat particle size distribution and a low proportion of fat particles below 1 µm. further aspects of the invention relates to the dairy product or nutritional formula per se and the use of said dairy product or nutritional formula.