NOVELTY - Biodiesel manufacturing or processing plant for processing on continuous basis a process fluid from a raw oil feedstock, comprises: (a) a housing containing a power generation means; (b) an inlet for raw oil from an oil bearing crop; (c) a raw oil heating vessel; (d) an esterification subprocess including a reactor; (e) a trans-esterification subprocess including an alkali dosing mechanism; (f) a flash evaporation separator for separation of excess alcohol from the process fluid through a differential pressure vaporization process; and (g) one or more finishing processes.    USE - The biodiesel manufacturing or processing plant is useful for processing on continuous basis process fluid from raw oil feedstock (claimed).    ADVANTAGE - The independently powered, portable biodiesel manufacturing/processing system and apparatus provide the consumer with a useful or commercial choice. The powered shear mixer may provide a high-energetic shear zone to allow the transesterification reaction to begin to take place in the mixer by reducing the droplet size of the immiscible liquids such as oil or fats and methanol. Thus, the smaller the droplet size the larger the surface area the faster the catalyst can react. An alternative, catalyst-free method for transesterification may use raw oil and a supercritical alcohol, normally methanol at high temperatures and pressures in a continuous process. In the supercritical state, the oil and alcohol are usually in a single phase, and the reaction occurs spontaneously and rapidly. The process can tolerate only small amounts of water in the feedstock, free fatty acids are converted to methyl esters instead of soap. A wide variety of feedstocks can be used. Also the catalyst removal step can be reduced or eliminated. High temperatures and pressures are required, but energy costs of production are similar or less than catalytic production routes.    DETAILED DESCRIPTION - Biodiesel manufacturing or processing plant for processing on continuous basis a process fluid from a raw oil feedstock, comprises: (a) a housing containing a power generation means; (b) an inlet for raw oil from an oil bearing crop; (c) a raw oil heating vessel; (d) an esterification subprocess including a reactor in which the process fluid is reacted with alcohol via selective esterification by a catalyst; (e) a trans-esterification subprocess including an alkali dosing mechanism to dose the process fluid in the presence of an alcohol, a powered sheer mixer to mix the alkali, alcohol and process fluid, and a heated cauldron for primary separation of glycerol from the process fluid; (f) a flash evaporation separator for separation of excess alcohol from the process fluid through a differential pressure vaporization process; and (g) one or more finishing processes; or biodiesel manufacturing or processing plant for processing on continuous basis a process fluid from a raw oil feedstock, comprises: (a) a housing containing a power generation means, (b) an inlet for raw oil from an oil bearing crop, (c) a raw oil heating vessel, (d) an esterification and trans-esterification process including a reactor in which the process fluid is reacted with alcohol via selective esterification by a catalyst, (e) a powered sheer mixer to mix the alkali, alcohol and process fluid, and a heated raw oil tank, (f) a combined reactor and primary separation/settling tank for the removal of glycerol from the process fluid, (g) a pre-heater and vacuum tank for separation of excess alcohol from the process fluid through drawing of a vacuum over the hot fluid and vaporization process, and (h) one or more finishing processes; or biodiesel manufacturing or processing plant for processing on continuous basis a process fluid from a raw oil feedstock, comprises: (a) a housing containing a power generation means, (b) an inlet for raw oil from an oil bearing plant crop or waste plant based oil, (c) a raw oil heating vessel, (d) a powered sheer mixer to mix triglycerides from the raw oil, and at least one reactant alcohol according to a tranesterification process, (e) a combined reactor and primary separation/settling tank for the reaction of the triglycerides and at least one alcohol to produce at least one fatty acid ester and at least one alcohol, (f) a heater and vacuum separator for separation of the at least one alcohol from the at least one fatty acid ester through drawing of a vacuum over the hot fluid and vaporization process, and (g) one or more finishing processes. INDEPENDENT CLAIMS are:    (1) a mixer including an outer housing having a central longitudinal axis, at least two interengaging, counter-rotating toothed mixing bodies, the toothed mixing bodies each rotating about a central axis, the respective axes offset radially and spaced along the central longitudinal axis of the outer housing; or a mixer including an outer housing having a central longitudinal axis, and at least a pair of end portions, each end portion having at least one toothed mixing body, the toothed mixing bodies of the respective end portions interengaging and counter-rotating about a central axis, the respective axes offset radially and spaced along the central longitudinal axis of the outer housing; or a mixer including an outer housing having a central longitudinal axis, at least a pair of end portions and at least one intermediate portion, each portion having at least one toothed mixing body, the toothed mixing bodies of the respective portions interengaging and counter-rotating about a central axis, the respective axes offset radially and spaced along the central longitudinal axis of the outer housing; and    (2) a separator including a substantially bell-shaped inner module having a crown, waist, a separating surface and lip with a mixture inlet extending upwardly through the crown and an outer hood containing the inner module and having at least one vapor outlet opening, the inner module mounted for rotation within the hood.