Method for producing instant powders from foods, chemical, pharmaceutical, biotechnological and medical products, as well as from berries, fruits and vegetables and a ready to eat porous matrix, where preboiling or in other way preparing a homogeneous puree or solution of for example foods, berries, fruit or vegetable, insertion of the puree or solution into a vessel connected with a new matrix producing device, addition of inert agent, activation of the process mixing with a propeller, preparation of a collecting reservoir as to be at equilibrium temperature with the incoming matrix, opening of valves at the discharge of the pressurized vessel, expansion of the mixture into the collecting reservoir, freezing of the matrix with size reduction, agglomeration or granulation, thereafter proceeding with drying at atmospheric pressure and below the matrix freezing point and drying at atmospheric pressure and above the matrix freezing point, and finally measurement of final product characteristics, quality and property.