TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The reactor is angled with respect to its vertical axis. The source of alcohol and the source of triglyceride each comprise a feed tank, each of the feed tanks are secured to the structural support. The apparatus comprises at least one proportioning valve.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Method: In the method, a stoichiometric excess of alcohol is used. The method further comprises: providing a proximal pre-heater in fluid communication with the distal pre-heater and the reactor, and a first flash drum, transferring the alcohol from the distal pre-heater to the proximal pre-heater, mixing the alcohol with the triglyceride to form the reaction mixture, and then transferring the reaction mixture to the reactor; providing a proximal heat exchanger configured to transfer heat to the proximal pre-heater, where the proximal heat exchanger is in fluid communication with the reactor and the first flash drum; and after the reaction is complete, directing a first proportion of the reaction products to the proximal heat exchanger and from it to the first flash drum, and directing a second proportion of the reaction products directly to the first flash drum. The proximal pre-heater is interposed to the distal pre-heater and the reactor, where the proximal pre-heater is at a temperature and pressure greater than that of the distal pre-heater but below 180 degrees C and 1450 psi. The method further comprises: providing a first intermediate pre-heater and a second intermediate pre-heater, where the first intermediate pre-heater is in fluid communication with the distal pre-heater, and the second intermediate pre-heater is in fluid communication with the first intermediate pre-heater and the proximal pre-heater; providing a first intermediate heat exchanger configured to transfer heat to the first intermediate pre-heater, where the first intermediate heat exchanger is in fluid communication with the first flash drum; providing a second intermediate heat exchanger configured to transfer heat to the second intermediate pre-heater, where the second intermediate heat exchanger is in fluid communication with the first flash drum; transferring the biofuel from the first flash drum to the first intermediate heat exchanger to heat the alcohol in the first intermediate pre-heater to a temperature and pressure above the distal pre-heater but below that of the second intermediate pre-heater; collecting the biofuel from the first intermediate heat exchanger; and transferring a first volume of the alcohol and glycerin gaseous mixture from the first flash drum to the second intermediate heat exchanger to pre-heat the alcohol in the second intermediate pre-heater to a temperature and pressure above that of the first intermediate pre-heater but below that of the proximal pre-heater. The method further comprises: providing a second flash drum; providing a distal heat exchanger configured to transfer heat to the distal pre-heater, where the distal heat exchanger in fluid communication with the second flash drum; transferring the first volume of the glycerin and alcohol mixture from the second intermediate heat exchanger to the second flash drum to condense the glycerin; transferring a second volume of the glycerin and alcohol mixture from the first drum directly to the second drum to condense the glycerin; collecting the glycerin from the second flash drum; transferring the remaining gaseous alcohol to the distal heat exchanger to pre-heat the alcohol in the distal pre-heater; delivering the so-recycled alcohol from the distal heat exchanger to the source of alcohol; and mixing the recycled alcohol with the alcohol source. In the method, transesterification the reactants are an alcohol and oil, where the alcohol is of formula (CnH2n-1) (I), and the oil is a vegetable oil.n = 1-10.Preferred Components: The alcohol is methanol. EXAMPLE - None given.