Welcome to
Midwest Grain Roasters


Portable Grain Roasting since 1989
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How Roasting Improves Your Bottom Line


Dairy and Ruminants: High producing dairy cows require bypass protein.  Roasting soybeans increases the bypass protein of soybeans from 26% to over 60%. ( Our average is 64%) Soybean meal is still “low bypass” at only 35%

Full Fat Roasted Soybeans are a High Energy Protein.  Energy, or fat, is expensive.  Feeding roasted soybeans is a cost-effective way to supply energy to dairy cows.

Poultry and swine:  Raw soybeans have trypsin Inhibitor. The trypsin inhibitor affects protein function resulting in poor performance and health. Poultry and swine do not require bypass protein. Heating soybeans to reduce trypsin to acceptable levels requires less heat than required to roast soybeans for high bypass protein. MGR’s onsite service roasts soybeans specifically for poultry and swine. Too much heat and the solubility is reduced.  Feed mill roasted soybeans are “dairy” style” with reduced solubility.

Corn & Cereal Grains

When cereal grains are roasted they go through a process called gelatinization. This means the starch molecule expands and the long chain molecule is broken into shorter chains. Gelatinization makes the starch more digestible. Cooked corn smells and tastes better. Fecal Starch analysis shows less starch in the manure when roasted grain is fed. Roasted grains make great calf feeds. Roasted grains grind much finer than raw grains. If you need super fine meal it makes sense to roast your cereal grains, especially when you can dry it at the same time. 18-20% is the maximum moisture in this instance.

Wet Soybeans

Roasting dries and adds value to wet soybeans.  It is common in the Midwest to have soybeans with a moisture above 20%.  Our process dries wet beans to storable levels while simultaneously increasing the bypass levels. Midwest Grain Roasters can maintain bypass values in soybeans up to 18% moisture. We have successfully roasted 25% moisture beans full of ice and snow. These beans are roasted, dried and fully cooked. These beans will store and feed well.

Roasting wet beans does incur higher costs. However, these onsite costs are much less than the shrinks, dock and drying charges the elevators punish you with. Consider this: Elevators charge beans at 15% moisture or greater a shrink factor of 4% per point. That’s a 20% dock on 20% soybeans. Then they charge to dry them. In charges and minimum storage charges are billed as well. Now you have less beans to either sell or roast. Roasting then adds it’s own shrink (10% or more) and charges of $1 per bushel. All of this shrink comes right out of your dry matter basis.

Compare MGR’s service:

Dry beans cost $1.00 to 1.15 per bushel to roast. If the roasting cost per bushel increases to $1.50 it is still much less than the shrinks and docks and you now have a value added roasted soybean. You only lose moisture. All of your dry matter is still in your feed bin.

Salvage Grain

We use the best roaster for moldy grain. The grain passes through a 4.6 million BTU burner multiple times. It’s hot, really hot! Like, 3500° hot. This super heated flame flash burns the CFUs to almost zero and reduces the mycotoxin loads. It is very effective on aflatoxins, where we have seen 90% reductions.  Zearalenone, T1 and T2 toxins are also reduced. CFU’s of yeast are also reduced to almost zero. The moldy grain now smells and tastes better and the toxin load is reduced. Wet grain is dried and storable

Midwest Grain Roasters is a family business with deep agricultural roots.

Eric and Julie Hamilton own and operate Midwest Grain Roasters.

Julie and I love agriculture.  We both come from rural Western Illinois.  She grew up on a small farm and I worked on my Dad's farm and with his ag service business helping anyway I could.

MGR is a family business and the Hamilton Family has been in the Ag Services industry for several generations. When I was a boy my father and grandfather had a fertilizer and ag chemical company called Hamilton Soil Service. This expanded into multiple locations in Western Illinois. A liquid fertilizer blending business was developed called Midwest Fertilizer Exchange that supplied many independent fertilizer dealers. This expansion included a Kent feed dealership that was transformed into Illini Feeds, serving Western Illinois. The Fertilizer and chemical business was sold in 1980 but the feed business remained.

After college and a year working in non-ag I returned to the family ag business, Illini Feeds.  During this time, Don Hamilton purchased the first grain Roast-A-Matic roaster. Originally intended as a stationary process he was convinced by Dale Schnupp, of Roast-A-Matic to go “portable.” Soon after a trip or two to Wisconsin the decision to start Midwest Grain Roasters and move to Wisconsin was made. In the spring of 1991 Julie and I were living in Spring Green.  We have been serving agriculture in this way ever since. Our sincere THANK YOU goes out to all our customers we’ve worked for through the years.


Since 1989 Midwest Grain Roasters has been roasting soybeans and other grains on site.  Our customers are farmers and feed mills.   


Frequently Asked Questions

How many bushels per hour do you roast?

Moisture makes a big difference. Dry beans go faster than wet beans. Estimated bushels per hour for soybeans: 10% = 350 or more bu/ hr 12% @ 320 bu/hr 13% @ 310 bu/hr 14% @ 300 bu/hr 15% @ 280 bu/hr 16% @ 260 bu/hr 17% @ 240 bu/hr 18% @ 220 bu/hr Over 18% and the bu/hr is the same and the temperature begins to fall

What do I need to supply?

We come ready to work! LP gas and electricity are on the service truck to support the roaster. We have an inbound roaster feed auger and a boom auger discharge. Most trucks and wagons can be unloaded and filled. You supply the grain and someone to move trucks and wagons and shovel out grain bins.

How wet can soybeans be roasted?

Wet beans are roasted and dried. Achieving high bypass protein levels with beans up to 18% moisture is no problem. We can roast up to 25% moisture beans, but when roasting wetter beans the beans may not get hot enough for perfect bypass protein levels. After roasting extremely wet beans they will be roasted, dried and storable. The roasting process will cook these beans, reducing the trypsin inhibitor and increasing the bypass values. They just may not be “optimum” at 60% or greater bypass. Roasting wet beans is a great alternative to “giving them away” to the elevator after all the shrinks, docks and little fees reduce their value.

What is the shrink on roasted soybeans?

Midwest Grain Roasters only roasts your beans. The only shrink is the water removed by the process. Ending moisture is usually about 3 or 4%. A 13% soybean will have a moisture shrink of 9% and a dry matter shrink of almost zero. Drier beans will shrink less and dry matter will remain the same. Conversely, wet beans have more shrink but the dry matter still remains the same. MGR's on site service keeps your dry matter tonnage in your inventory, not the feed mill's. Most farmers will see 10% or more dry-matter loss when roasting soybeans at the co-op.

How long can I store roasted soybeans?

A long time! Most customers roast annually. Through the years we have seen 5 and 6 year old roasted soybeans fed with no herd performance loss.

Can I fill a grain bin with roasted soybeans?

Yes. If you have a fan on the bin we can fill the bin with fresh roasted soybeans. We routinely fill 10-20,000 bushel bins.

Do you only roast during harvest?

No, we roast for our customers all year round.

I don’t have a bin. Can I still roast and feed my own beans?

Yes, many customers roast from wagon to wagon after harvest and the roasted soybeans are stored on the wagon until fed. Many customers lay a few thousand bushels in a commodity shed.

Is MGR insured?

Yes, Midwest Grain Roasters, Inc. is fully insured

1099 and taxes

Midwest Grain Roasters, Inc. is a Corporation. Sending 1099 tax documents is not required. We will gladly send the W-9 Taxpayer Identification Number and Certification form if requested.