fill your vitamix about half full with water , add produce and blend into liquid pulp . then strain with fine metal kitchen strainer or fine mesh like a paint filter bag . with this method the juice doesnt get heated . now if the airation hurts juice im not sure of the outlook .

or cut up produce into chunks , put in real big pot then pulverize / crush with whatever type impliment / tool you can dig up that works efficeintly . then add water and strain .