Applying an additive from radially outside upon production of an aerosol-generating rod

Device for producing an aerosol-generating rod, comprising:

• a converging device with a forming space converging along an axial direction;
• a susceptor guide extending into the forming space of the converging device and comprising an exit opening for a susceptor within the forming space of the converging device;
• a conveyor system configured to convey filling material through the forming space of the converging device to shape the filling material into a rod incorporating the susceptor;
• at least one additive supply line having a dispensing opening that opens into the forming space of the converging device radially outward of the susceptor guide;
• and
• a first additive reservoir and a second additive reservoir, the first additive reservoir being connected to a first additive supply line of the at least one additive supply line and the second additive reservoir being connected to a second additive supply line of the at least one additive supply line.