The juices should be prepared using a special machine to grind the fruit and vegetables into a pulp, which is then pressed in a hydraulic press. This method produces the largest amount of juice, beside releasing the maximum amount of vitamins and minerals, as well as safeguarding the essential enzymes. Juices need to be drunk immediately, as the enzymes begin to deteriorate rapidly within 20 minutes. The Champion Juicer, with a Health Stream Press, is the one used by most Gerson patients. Both can be obtained from the Wholistic Research Company Ltd. For more information go to http://www.wholisticresearch.com (and to benefit from the special discounts they offer be sure to mention the Gerson Support Group). The Norwalk juicer, with is built-in hydraulic press, is also excellent but is more expensive.