An assembly injects a filling e.g. jam or cream into baked food e.g. a doughnut or cake and has a container for the jam or cream and one or more lines (13) to injection needles via a hose pump (11). The quantity injected is infinitely variable. The assembly has a filling station (12) that is detachable or interchangeable. The jam or cream is drawn from the container via a semi-submerged tube (16) and delivered by the pump.