Method and system for producing a high protein meal from a whole stillage byproduct and system therefor

A method for producing an oil co-product from a whole stillage byproduct comprising:

• dividing out a portion of a whole stillage byproduct stream that includes a whole stillage byproduct and separating the portion into a first insoluble solids portion, including fiber and germ, and a first liquid portion;
• milling at least a portion of the first insoluble solids portion to break up the fiber and germ and release oil;
• combining the milled portion with the first liquid portion and recombining the combined milled portion and the first liquid portion with an initial whole stillage byproduct upstream from where the dividing out of the portion occurs;
• thereafter, including after dividing out the portion of the whole stillage byproduct stream, separating a remaining whole stillage byproduct stream, which includes at least a portion of the combined milled portion and first liquid portion, into a second insoluble solids portion to produce a distillers dried grain with or without solubles and a second liquid portion, which includes at least a portion of the oil from the milling step;
• and
• subjecting at least a portion of the second liquid portion, including the oil, to an oil separation step to provide an oil co-product.