A distillation probe includes a conduit having a central axis. In addition, the distillation probe includes a baffle assembly disposed in the conduit. The baffle assembly includes a plurality of axially-spaced baffles positioned one-above-the-other in a stack within the conduit. Further, the distillation probe includes a first helical cooling coil wrapped around the conduit. Moreover, the distillation probe includes a thermally conductive layer disposed about the conduit and encapsulating the first helical cooling coil. The thermally conductive layer is configured to transfer thermal energy between the first helical cooling coil and the conduit.