Consumers looking for fiber in their juice appreciate the pulp content in juice from a slow juicer.

WSJ: Home Juicing Guide: Vitamix, Hurom and Breville All Offer Advantages

Now everyone steams their vegetables or puts them in a juicer to make their own modern green juice cocktail.

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Light bruising from mechanical harvesting may be acceptable for fruit going to the juicer, but not for fruit displayed on a supermarket aisle.

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"After the film there was a groundswell, " says Jack Schwefel, chief executive of retailer Sur La Table, which expects 2013 juicer sales to rise 60%.

WSJ: Home Juicing Guide: Vitamix, Hurom and Breville All Offer Advantages

They bought a juicer and made strange vegan beverages in it.

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They crush or press juice out of produce in a few minutes, leaving less waste behind than a fast juicer does, and they typically do a better job with tricky ingredients like wheat grass, nuts and leafy greens.

WSJ: Home Juicing Guide: Vitamix, Hurom and Breville All Offer Advantages