An emulsifier product comprising: a starch half ester of an alkenyl succinic anhydride, wherein the starch half ester of an alkenyl succinic anhydride has a water fluidity of not more than 75, wherein the starch half ester of an alkenyl succinic anhydride is prepared by a dispersed phase process, which is an at least two step process, wherein a starch is substantially gelatinized so that the starch does not have a Maltese cross when viewed under polarized light and has lost all of its granular or crystalline structures when viewed microscopically at 100x magnification and in the next or any subsequent process step, the substantially gelatinized starch is derivatized, and wherein, when the starch half ester of an alkenyl succinic anhydride is used to prepare a test oil-in-water emulsion with the starch half ester of an alkenyl succinic anhydride as a sole emulsifier at w/w ratio of the starch half ester of an alkenyl succinic anhydride: oil of 1:4 with an oil load of 20% by weight, the test oil-in-water emulsion is characterized by at least the following: a) no more than about 5% of the oil particles of the emulsion greater than 1 micron after 24 hours at 57°C as assessed by polarization intensity differential plus elastic light scattering; and b) a Brookfield viscosity of the emulsion of less than about 2000 cps after about one week of storage and 5°C, as assessed by Brookfield Programmable DV-1 Viscometer with the oil in the test oil-in-water emulsion consisting of 48% 1× orange oil; 12% 5× orange oil; and 40% ester gum weight/weight. a starch half ester of an alkenyl succinic anhydride, wherein the starch half ester of an alkenyl succinic anhydride has a water fluidity of not more than 75, wherein the starch half ester of an alkenyl succinic anhydride is prepared by a dispersed phase process, which is an at least two step process, wherein a starch is substantially gelatinized so that the starch does not have a Maltese cross when viewed under polarized light and has lost all of its granular or crystalline structures when viewed microscopically at 100x magnification and in the next or any subsequent process step, the substantially gelatinized starch is derivatized, and wherein, when the starch half ester of an alkenyl succinic anhydride is used to prepare a test oil-in-water emulsion with the starch half ester of an alkenyl succinic anhydride as a sole emulsifier at w/w ratio of the starch half ester of an alkenyl succinic anhydride: oil of 1:4 with an oil load of 20% by weight, the test oil-in-water emulsion is characterized by at least the following: a) no more than about 5% of the oil particles of the emulsion greater than 1 micron after 24 hours at 57°C as assessed by polarization intensity differential plus elastic light scattering; and b) a Brookfield viscosity of the emulsion of less than about 2000 cps after about one week of storage and 5°C, as assessed by Brookfield Programmable DV-1 Viscometer with the oil in the test oil-in-water emulsion consisting of 48% 1× orange oil; 12% 5× orange oil; and 40% ester gum weight/weight. a) no more than about 5% of the oil particles of the emulsion greater than 1 micron after 24 hours at 57°C as assessed by polarization intensity differential plus elastic light scattering; and b) a Brookfield viscosity of the emulsion of less than about 2000 cps after about one week of storage and 5°C, as assessed by Brookfield Programmable DV-1 Viscometer with the oil in the test oil-in-water emulsion consisting of 48% 1× orange oil; 12% 5× orange oil; and 40% ester gum weight/weight.