The invention involves developing and stabilizing cultivating droplets within a matrix of a porous medium. A cultivation medium may be selected, prepared and mixed with a surfactant. Where cells are desired to be cultured in droplets, cells may be added. The mixture may be converted into cultivating droplets. The cultivating droplets may be stabilized by introducing them to a porous medium. The porous medium may contain hydrophobic particles. Stabilized, cultivating droplets having one or more cells may form an aseptic microenvironment for the concentrated growth of cells.