Packaging (1) is provided with a frangible seal (180), together with a method of producing such packaging. The packaging comprises an outer packet part (100) and multiple inner packet parts (150) disposed within the outer packet part. The inner packet parts can move relative to the outer packet part between a closed position and an open position. The seal (180) comprises a body portion coupled to the outer packet part, and separable portions each coupled to one of the inner packet parts. When an inner packet part (150) is moved from the closed position to the open position, this causes the seal (180) to break.