Twin gear triturating machines are usually the most expensive juicers offering the best juice yield. Twin gear juicers employ two metal counter rotating gears to crush the juicing fodder. The precise tolerance of the gears allows the juice to flow through the gap between the gears while the large pulpy matter passes along the top of the gears and is discharged.
Centrifugal (pronounced sin-tra-fue-gal) are the types of juicers that many people are most familiar with. These juicers have been popular for the longest time, and most closely resemble a blender. These juicers utilize a special kind of force called centrifugal force, which is closely related to things that rotate. Basically, it means that if you spin something around really fast, it’s going to move away from the point around which it is spinning. If you spin your arm around in circles quickly, you can feel your hand swelling. This is because the centrifugal force is acting on the fluids in your body, moving them away from your should—which is the center of rotation—and towards your hand. What this Newtonian tangent means, is that centrifugal juicers apply force to your fruits and vegetables by spinning around really fast!
Twin-gear juicers: For greens like kale, spinach, and wheatgrass, a twin-gear juicer extracts the most juice. Twin-gear juicers are also the most expensive models, often costing over $500. As the name suggests, two gears work together to crush the cell walls of the vegetable and extract the juice. They’re best for greens and other tough fibrous vegetables and not great for fruit.
Juicing isn’t a trend that will go away anytime soon. While some of what is being said online about the benefits of juicing is purely pulp fiction, there are still some benefits to this healthy habit. Namely, enabling certain individuals to add vitamins, minerals, and other nutrients to their diet. These particular individuals are those who seem to have difficulty incorporating fruits and vegetables into their daily meals. In any case, if you want to try juicing or would like to replace an out-of-date juicer in your kitchen, we’ve got just the guide to help you find the best match.
Low foam production: The foam that accumulates on top of your juice is a good indicator of how much air has been whipped into your juice by the machine, and more air exposure equals more oxidation. Oxidation is a controversial topic. As Harold McGee explains in On Food and Cooking: The Science and Lore of the Kitchen, “Because juicing mixes together the contents of living cells, including active enzymes and various reactive and oxygen-sensitive substances, fresh juices are unstable and change rapidly.” So the prevailing theory among juicers is that if less oxygen is whipped into a juice, the valuable nutrients and enzymes remain more intact. But as Kohler told us, there’s not much peer-reviewed research on how or if oxidation affects the nutrient contents of your juice. “It’s all manufacturers’ data for the most part,” he said, “which I take with a grain of salt.” That said, we still prioritized machines that produced less foam, because at the very least, oxidation can cause your green juice to turn brown, and may lead to some muddy, off flavors.
The gist: This Hamilton Beach model is perfect for either those who are just getting into juicing or even seasoned juicers who simply don't want to break the bank by spending several hundred bucks on a juicer. It cranks out 800 watts of power and has a 3-inch-wide chute that you can fit whole foods into (for example, a whole apple), so you can spend less time cutting and prepping. All of the juicer's removable parts are dishwasher safe, which makes clean-up super easy. Plus, it even comes with a handy cleaning brush.
Dietitian and nutrition writer Sharon Palmer told us that a juicer “should be easy to use, take apart, clean, and store.” Most of the juicers took about 10 minutes to assemble. The $300 Breville and the $400 Hurom both came mostly assembled, but the Tribest ($250) didn’t — and we found its instructions confusing and difficult to follow. KitchenAid’s $300 juicer attachment was hands-down the worst, requiring a full 20 minutes to assemble and almost causing injury thanks to its exposed blade.
There are other features which give you convenience. A juicer that has a large feeding tube, for instance, means you can put in large chunks, enabling you to skip the tedious chore of chopping your produce into small pieces. A large disposal spout is also a good feature as large spouts do not easily get clogged up and have the added advantage of producing a higher volume of juice.