Top panel, left: Sky positions of likely Jhelum members in the stream coordinate system reveal for the first time a complex morphology in a cold stream. Member selection is based on the Gaia proper motions and DES photometry, and excludes nearby contaminants using Gaia parallaxes. Top panel, right: profile of likely Jhelum members between −5° < ϕ₁ < 25° is asymmetric, with a narrow, dense component at ϕ₂ > 0° and a more diffuse, wide component at ϕ₂ < 0°. This morphology is intrinsic to the stellar stream, as similar signatures are absent from the full stellar density field (middle panel) and the dust map (bottom panel). As a guideline, the top two dashed lines bracket the narrow component, while the bottom two encompass the wide component.