A method for printing a three-dimensional crystalline structure such as a chocolate layer wherein, after printing, the material has a desired crystal structure. An embodiment can include printing a liquid first layer of material with a printer onto a second layer of mate al having a crystal structure. Subsequently, the printed liquid first layer is processed to solidify. The first layer. During the processing of the printed liquid first layer, the second layer functions as a crystal seed layer through physical contact with the printed liquid first layer and the second layer crystallizes with the crystal structure.

The present disclosure discloses double network, trans-free, and fat-analogous emulsion gels for 3D/4D printing and preparation thereof, belonging to the technical field of healthy oil and food processing. A method of preparing the emulsion gels includes the following steps: (1) dissolving the hydrophilic colloid into hot water containing emulsifier nanoparticles with a mass concentration of 0.5-15% to obtain an aqueous solution; (2) dissolving oil-soluble small molecules in heated vegetable oil and uniformly mixing to obtain an oil solution, or mixing a variety of vegetable oil and heating to obtain a mixed oil; (3) mixing the aqueous solution in step (1) and the oil solution or mixed oil in step (2) in a volume ratio of 1:1-9:1, and homogenizing the mixture to obtain the emulsion gels. The emulsion gels can partially or completely replace traditional fats in food such as chocolate, ice cream and non-dairy cream, and are nutritious and healthy.

A method for manufacturing lactase enzyme infused chocolate consists of specific ordered steps wherein enzyme is infused toward the end of the tempering phase to preserve lactase's active enzymatic properties and the chocolate's flavor profile while addressing lactose sensitivity.

A metering machine for filling free-flowing media into cavities of a mould that is to be filled is described. The metering machine has at least one independent metering unit which includes two dispensers, with a respective dedicated drive, and a nozzle unit. The nozzle unit is common to the two dispensers.