A portable, pressurized delivery apparatus adapted for charging nitrous oxide of a food-grade purity into a dispenser containing liquid heavy cream, comprising: a vessel characterized by an effective diameter and longitudinal axis, said effective diameter reduced to a tapered region along the longitudinal axis of the vessel, said vessel further defined by an interior region having a water volume of up to 10 liters in which said food-grade nitrous oxide is occupied therewithin and maintained under pressure; a valve integrated pressure regulator (VIPR) operably connected to said tapered region and contained within a shrouded structure, said VIPR having a unitary structure along the longitudinal axis, said VIPR defined, at least in part, by multiple components including a pressure regulator, a pressure relief device, a pressure gauge, a fill port along one portion of the VIPR, a delivery port along a second portion of the VIPR, and an on-off valve, wherein each of said pressure regulator, said pressure relief device, said on-off valve and pressure gauge is substantially encapsulated within said shrouded structure; said pressure gauge having a first visual color indicator to indicate a first vessel pressure that is adequate to provide the preset delivery pressure, and a second visual color indicator to indicate a second vessel pressure that is not adequate to provide the present delivery pressure. said pressure regulator configured to deliver said food-grade nitrous oxide at the preset delivery pressure ranging from 689 kPa (100 psi) to 2068 kPa (300 psi) into said dispenser containing said liquid heavy cream; said on-off valve configured to allow flow of said food-grade nitrous oxide from the interior region into said delivery port through which said food-grade nitrous oxide flows towards an inlet of the dispenser, and further wherein said on-off valve is configured to allow flow of said food-grade nitrous oxide from a source to the fill port into which said food-grade nitrous oxide flows into the interior region of the dispenser; said pressure relief device operably connected to an outlet of said pressure regulator and configured to relieve pressure in the apparatus to a level that is at or below a pressure rating of the dispenser; and said shrouded structure further comprising a handle to enable portability of the apparatus. a vessel characterized by an effective diameter and longitudinal axis, said effective diameter reduced to a tapered region along the longitudinal axis of the vessel, said vessel further defined by an interior region having a water volume of up to 10 liters in which said food-grade nitrous oxide is occupied therewithin and maintained under pressure; a valve integrated pressure regulator (VIPR) operably connected to said tapered region and contained within a shrouded structure, said VIPR having a unitary structure along the longitudinal axis, said VIPR defined, at least in part, by multiple components including a pressure regulator, a pressure relief device, a pressure gauge, a fill port along one portion of the VIPR, a delivery port along a second portion of the VIPR, and an on-off valve, wherein each of said pressure regulator, said pressure relief device, said on-off valve and pressure gauge is substantially encapsulated within said shrouded structure; said pressure gauge having a first visual color indicator to indicate a first vessel pressure that is adequate to provide the preset delivery pressure, and a second visual color indicator to indicate a second vessel pressure that is not adequate to provide the present delivery pressure. said pressure regulator configured to deliver said food-grade nitrous oxide at the preset delivery pressure ranging from 689 kPa (100 psi) to 2068 kPa (300 psi) into said dispenser containing said liquid heavy cream; said on-off valve configured to allow flow of said food-grade nitrous oxide from the interior region into said delivery port through which said food-grade nitrous oxide flows towards an inlet of the dispenser, and further wherein said on-off valve is configured to allow flow of said food-grade nitrous oxide from a source to the fill port into which said food-grade nitrous oxide flows into the interior region of the dispenser; said pressure relief device operably connected to an outlet of said pressure regulator and configured to relieve pressure in the apparatus to a level that is at or below a pressure rating of the dispenser; and said shrouded structure further comprising a handle to enable portability of the apparatus.