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Royal Lee Household Mill

SKU: RA223, Part Number: S-700, Shop more Royal Lee Organics items
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  • Royal Lee grain mill
  • 4 quart glass flour bowl
  • Bowl cover
  • Cleaning brush
  • Disassembly tool
  • Owner's manual 


Royal Lee Household Mill

The Royal Lee Household Mill grinds dry grains, including dried sprouted grains, into whole grain flour or meal right in your kitchen. The Lee mill is a precision-engineered appliance based on Dr. Royal Lee’s original 1940s design. In the current mill, Lee Engineering has upgraded the electrical components, made the motor quieter, added an automatic overheat protection circuit, and made many other improvements.

The Lee mill has a unique design; it's a high speed micronizing mill, but unlike most micronizing (aka "impact") flour mills that use disks with opposing rows of stainless steel teeth, the Lee mill features impeller arms that sling grain particles at high speed against a stationary synthetic stone. By adjusting a gap at the outer circumference of the milling chamber, the user determines how fine particles must be to exit the chamber. Setting the outlet gap tighter increases the time flour remains in the chamber, and decreases the throughput rate. In this respect, the Lee mill is identical in basic concept to a commercial hammer mill. A typical stone burr mill controls output texture by the burr gap, a typical impact mill controls it by input restriction, and the Lee mill controls it by output restriction.

Input Rate

Input rate is self-governing in the Lee mill, so the rate of grain input automatically keeps pace with the texture setting you choose.

Ultra-Fine Flour

Capable of grinding most dry grains, experience with this mill has demonstrated to us at Pleasant Hill Grain that the Lee mill is uncompromising in its focus on ultra-fine flour. It produces the finest flour of any home grain mill we've ever seen, and if making the finest whole grain pastries is your goal, we think the Royal Lee mill certainly should be a finalist in your selection process. At its finest setting, the flour truly is incredibly fine, containing virtually no coarse bits at all. Such flour is just what you want for pastries, but offers no advantage for making most types of bread. To decide whether the Royal Lee meets all of your needs, you'll want to weigh some additional factors.

As is usually the case in life, achieving an accomplishment as remarkable as the fineness produced by the Lee mill, involves tradeoffs. From our perspective, we find those principally in the Royal Lee's price, milling speed, flour temperature, and ranges of input and output sizes, versus those of other mills.

Starting with cost, the Royal Lee clearly occupies the upper tier of mill pricing. How you personally look at that price will likely depend on your mill budget, how highly you value ultra-fine flour, and how important the mill's limitations are to you. Some will say “no way,” others “well worth it.”

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Milling Speed

Looking at milling speed, at its finest setting we timed the Royal Lee mill at 25 minutes to grind a full hopper (8 cups) of hard wheat. As mills go, that's a long, long time—easily the slowest milling performance we've ever observed. In fairness, of course, at that finest setting the mill is using that time to make incomparably fine flour. At the Lee mill's medium setting, which produces flour perfect for making bread, it ground 4.7 ounces per minute, still 2-4 times slower than most of the mills we offer. A slower mill can simply be started earlier to have your flour ready when you need it, but a two-to-four-fold difference is a lot, bearing in mind that grain milling is inherently a somewhat noisy operation.

Related to milling time, in the Lee mill, is the temperature of the flour. Excessive heat destroys nutrients, and while most of the mills we offer keep flour around 118 to 120 degrees at their finest settings, we measured the Lee mill's finest flour at 155 degrees F, which is simply extreme. Milling bread-texture flour kept it at 122 degrees, just a little over what's common among other quality mills. These results were for full-hopper batches; when milling smaller amounts, temps likely won't get quite as high. We aren't aware of quantitative figures on the difference in nutrition loss between 118 degrees and 155 degrees, and when making pastries your primary focus may not be on nutrition, but the presumption would seem to be that it has some value, or you'd just be baking with white flour.

Output texture range

Having established that the Lee mill has fine flour nailed like never before, it can also produce excellent bread flour and, by moving the texture lever to the coarse end of its range, it will also produce a meal texture. Some mills that are claimed to produce meal actually only make coarse flour (which is finer than meal), but the Lee mill will indeed make a true, gritty meal texture—something that other micronizing mills cannot do. And because the adjustment mechanism is continuously variable within its range, you can choose any texture between true meal, and ultra, ultra fine. The Royal Lee mill's output range stops at meal texture, so it does not share the ability of some mills we offer, to produce a cracked-grain result (coarser than meal texture.)

Input size range

While some mills will accept large-kerneled field corn, the Lee mill's inlet size requires that field corn (also called dent corn) be reduced in size first, using a food processor. You could probably use a blender instead, taking care not to go too far with this pre-milling, as Lee Precision says not to regrind flour with the mill.

Another limitation of the Lee mill is that it cannot grind beans or oilseeds. The oilseed restriction applies to most home grain mills of the types that can make good bread flour. The makers of the Lee mill recommend that users who want to mill products that are higher in oil or moisture content purchase a second mill of the steel-burr type, made for grinding coffee or seeds. Most such mills are quite inexpensive, and we think this is good advice. Most grain mills can grind beans if they fit into the mill's inlet which, for some mills, requires pre-processing.

Assembly & Cleaning

We've found installation of the flour skirt between the mill and the included flour bowl awkward, and its removal after milling to be messy. Also, if the stationary stone is removed for cleaning, its reinstallation is quite difficult due to its tight fit tolerance with the milling chamber.

Overall fit and finish of the mill are impeccable, as one expects—but doesn't always get—from a countertop machine at this price point.

Unparalleled for Fine Flour!

In summary, we find that the Royal Lee Household Mill's ability to make incredibly fine flour from whole grains is unparalleled. If your baking focuses on whole grain pastries and if none of its tradeoffs are deal breakers for you, then we think this mill offers excellent value.

For more details please see the specs tab, above.

Whole Grain Nutrition: Harvest the Benefits!

Imagine that for years, your children ate mainly candy. Imagine that you did, too. Imagine an entire nation on a candy diet. Imagine the health consequences.

Whole grain pancakesNatural whole grains contain a myriad of health-essential nutrients, from proteins to vitamins and amino acids. But "white flour" consists only of the starchy endosperm of the wheat kernel. In its natural form the endosperm provides wholesome energy, but it's the least nutrient-rich part of the grain. Removed are the nutrient-packed bran, wheat germ, and wheat germ oil. Then to make it extra white, industrial processors go further, chemically bleaching it, and returning just enough of a few vitamins to stave off beriberi and rickets. They're allowed to call the end product "Enriched Flour" but a truthful label would read "Impoverished Flour." This snow white, denutritionalized substance is a commodity worth billions of dollars annually to its merchandisers because of a commercially useful trait: Unlimited shelf life. No matter how long it sits in the mass distribution channel, it can't go bad precisely because there's actually nothing left in it that can go bad. Nutritionally, it's bad when bagged. A few companies have grown enormously rich marketing this pseudo-food on the basis of convenience, ease, and its dazzling white appearance. But a blind eye was turned to the consequences of replacing real whole grain flour with something that looks special, yet is virtually devoid of nutrition. In essence, candy. So widely has this nutritional travesty become accepted that we call it—and think of it as—wheat flour. But to depart further from natural grain flour would scarcely be possible. Then to make matters worse, artificial sweeteners, flavors and colors, appetite stimulants and preservatives are added to many of our foods. "Artificial" tells you those things aren't naturally food. But have you ever wondered what they actually are, then? Did you know some of them are actually petroleum derivatives? And what unintended side effects might those complex counterfeit compounds have on us?

The human body is an absolute marvel; scientists have a long way to go to understand a tenth of how we work. But as capable and as resilient as our bodies are, common sense and history teach that we need wholesome, nutritious food to remain healthy and strong. The denatured byproducts being mass marketed today don't provide what we need, because they've been profoundly altered by processes in which real nutrition is considered last, or not at all.

Homemade artisan whole grain breadsThere's a great solution to this problem. By grinding grains in your kitchen and using the whole grain flour while it's fresh, you get the nutrition needed for strength and health. You also get far tastier food, with genuine character—incomparably more satisfying than today's mass marketed pretenders. After transitioning to whole grains, putting out a plate of white styro-bread will elicit comments like "Why are you giving us this... and where's the good stuff?". Even flour labeled as "whole grain" in stores falls far short of what you can easily grind yourself, because unless it's ground while you wait, the essential Vitamin E in true whole grain flour would go rancid in days (meaning that it's probably been removed), and all nutrients begin steadily oxidizing-away from exposure to oxygen as soon as grain is milled. What's in those bags is not whole grain flour if it's been sitting on a shelf for even a few days; that's literally impossible.

Making real food is more than doable, it's downright fun with help from Pleasant Hill Grain! A grain mill like the KoMo Classic is the place to start. And to make whole grain bread quickly, easily and with consistently wonderful results, nothing beats a quality stand mixer that's capable of mixing and kneading bread that's ready to pop in the oven—quickly and without hand kneading. These machines make it easy to turn the corner to a far better and more enjoyable way of eating!

Compare Electric Grain Mills

Electric grain mill comparison

Click to see our electric grain mill comparison table.

We offer a wide selection of grain mills: Click to see our category page of all grain mills!

Highly Recommended Whole Grain Cookbooks & Videos!

Don't miss our treasury of cookbooks for whole grain cooking & baking! We have old favorites and exciting new titles, full of tasty and nutritious recipes. These resources will open up new worlds of whole grain adventure for you, whether you're an old hand or just beginning the journey. Whole grain wheat, beans & alternative grains are all covered!

Click for cookbooks & DVDs.

See bulk whole grain wheat and many other grains.

Click for info on grinding fibrous materials and nuts.

Grain Mill Accessories & Replacement Parts

Click to see Grain Mill & Flaker Attachments or Grain Mill & Flaker Replacement Parts.

This product is made in the USA!

This product was made in the USA

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Select product option(s) from the drop-down menu at top of page to see item-specific specifications here.

Manufacturer Part NumberS-700
UPCDoes not apply
BrandRoyal Lee Organics
Product Weight (lbs.)23 lb.
Grinding burr diameter6.25
FinishPainted glossy
Housing MaterialCast aluminum
Burr MaterialCorundum
Bowl MaterialGlass
Capacity (volume)8 cups
PowerElectric (AC)
Horsepower1 HP
Volts AC120
Cord Length36"
Warranty Length1 year disc assembly, 5 years motor and stone, 15 years other parts


Select product option(s) from the drop-down menu at top of page to see item-specific specifications here.


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