Abstract: An apparatus and method for stripping volatiles from a feed stream and concentrating the volatiles in the overhead vapors forming a condensate product and simultaneously producing a low percent volatiles outlet stream as a concentrate product. The volatiles separator and concentrator, ("VSC"), unit has many applications in the reduction and the concentration of volatiles in the beverage, fuel, and industrial alcohol industries, as well as in chemical applications for removing or stripping volatiles from heat sensitive feed substrates which require low temperatures and a short residence time to prevent degradation of the product. The preferred embodiment of the VSC unit utilizes a short feed stream preheat contact time in combination with turbulent high velocity flow at temperatures below 100.degree. F. to provide flash vaporization for volatiles separation with reboil capability to adjust volatiles concentration in the residue and product. The application of high vacuum in the range of 27" to 28.