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Juice as a healthy drink is currently being consumed by a large percentage of the world's population. Juices are considered an essential component of the diet. In addition, the first step towards the production of fruit-based products such as marmalade, juice, soft drinks, alcoholic drinks, pastilles, sauce, and jelly is the extraction of juice. The applicability of the filter-press method for the extraction of black mulberry juice was investigated and optimised in this study. Considering cylinder diameter, layer height, and loading rate as independent variables, juice percent, juice density, final bulk density of pomace, final true density of pomace, final porosity of pomace, juice point time, elasticity modulus of bulk berries, specific consumed energy, and mean required power were determined. The force-deformation behaviour during the loading stage, stress-time behaviour during the stress-relaxation stage, and momentary juice …