A method of forming a foam, comprising, in this order, - mixing an aerosol forming agent, a foam forming agent and optionally a solvent and/or at least one non-tobacco flavoring agent, preferably under heating, wherein the aerosol forming agent is selected from the group consisting of glycerol, propylene glycol, sebacate esters, and mixtures thereof, and wherein the foam forming agent is selected from the group consisting of agar, gellan gum, lecithin, polyglycerol esters of fatty acids, glycerol esters of fatty acids, sorbitan esters of fatty acids, and mixtures thereof; - optionally aerating the mixture; - adding to the mixture a tobacco ingredient containing agent and/or an inhalable agent, wherein the inhalable agent is at least one of a stimulant and a flavor; - optionally aerating the mixture; - adding a foam stabilizing agent, wherein the foam stabilizing agent is selected from the group consisting of cellulose gum, hydroxyalkylated carbohydrates, salts thereof, and mixtures thereof; and - cooling of the mixture; wherein the mixture is aerated after the adding of the foam stabilizing agent and/or after cooling of the mixture, wherein the weight of the tobacco ingredient containing agent and/or the inhalable agent is 0.1 - 33 wt.-% of the weight of the foam, wherein the weight of the aerosol forming agent is 40 - 70 wt.-% of the weight of the foam, and wherein the produced foam has an aeration of at least 4 vol.%, based on the total volume of the foam. - mixing an aerosol forming agent, a foam forming agent and optionally a solvent and/or at least one non-tobacco flavoring agent, preferably under heating, wherein the aerosol forming agent is selected from the group consisting of glycerol, propylene glycol, sebacate esters, and mixtures thereof, and wherein the foam forming agent is selected from the group consisting of agar, gellan gum, lecithin, polyglycerol esters of fatty acids, glycerol esters of fatty acids, sorbitan esters of fatty acids, and mixtures thereof; wherein the aerosol forming agent is selected from the group consisting of glycerol, propylene glycol, sebacate esters, and mixtures thereof, and wherein the foam forming agent is selected from the group consisting of agar, gellan gum, lecithin, polyglycerol esters of fatty acids, glycerol esters of fatty acids, sorbitan esters of fatty acids, and mixtures thereof; - optionally aerating the mixture; - adding to the mixture a tobacco ingredient containing agent and/or an inhalable agent, wherein the inhalable agent is at least one of a stimulant and a flavor; - optionally aerating the mixture; - adding a foam stabilizing agent, wherein the foam stabilizing agent is selected from the group consisting of cellulose gum, hydroxyalkylated carbohydrates, salts thereof, and mixtures thereof; and - cooling of the mixture; wherein the mixture is aerated after the adding of the foam stabilizing agent and/or after cooling of the mixture, wherein the weight of the tobacco ingredient containing agent and/or the inhalable agent is 0.1 - 33 wt.-% of the weight of the foam, wherein the weight of the aerosol forming agent is 40 - 70 wt.-% of the weight of the foam, and wherein the produced foam has an aeration of at least 4 vol.%, based on the total volume of the foam. <EOS>