A method for manufacturing a multi-compartment beverage bottle, the method comprising: providing a first housing element, a second housing element, a shuttle element and a closure element; inserting a first fluid into a first fluid compartment defined within the first housing element; moving the shuttle element into a seal position with respect to the first housing element, thereby forming a first stage subassembly in which the first fluid compartment is sealed from fluid communication with an ambient environment; placing the second housing element in engagement with the first stage subassembly, thereby forming a second stage subassembly wherein (a) a second fluid compartment is at least partially defined by the second housing element and shuttle element, and (b) the first fluid compartment remains sealed from fluid communication with the second fluid compartment and ambient environment by way of the shuttle element being in its seal position; inserting a second fluid into the second fluid compartment by way of a dispense aperture of the second housing element; and sealing the second fluid compartment from fluid communication with the ambient environment by way of the closure element, characterised by further comprising, after the step of moving subjecting the first stage subassembly to high pressure processing by way of hydraulic fluid; and drying the first stage subassembly so as to remove hydraulic fluid therefrom. inserting a first fluid into a first fluid compartment defined within the first housing element; moving the shuttle element into a seal position with respect to the first housing element, thereby forming a first stage subassembly in which the first fluid compartment is sealed from fluid communication with an ambient environment; placing the second housing element in engagement with the first stage subassembly, thereby forming a second stage subassembly wherein (a) a second fluid compartment is at least partially defined by the second housing element and shuttle element, and (b) the first fluid compartment remains sealed from fluid communication with the second fluid compartment and ambient environment by way of the shuttle element being in its seal position; (a) a second fluid compartment is at least partially defined by the second housing element and shuttle element, and (b) the first fluid compartment remains sealed from fluid communication with the second fluid compartment and ambient environment by way of the shuttle element being in its seal position; inserting a second fluid into the second fluid compartment by way of a dispense aperture of the second housing element; and sealing the second fluid compartment from fluid communication with the ambient environment by way of the closure element, characterised by further comprising, after the step of moving subjecting the first stage subassembly to high pressure processing by way of hydraulic fluid; and drying the first stage subassembly so as to remove hydraulic fluid therefrom. characterised by further comprising, after the step of moving subjecting the first stage subassembly to high pressure processing by way of hydraulic fluid; and drying the first stage subassembly so as to remove hydraulic fluid therefrom.