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The MiniBrew

Deluxe & Affordable Models

Mash Lauter Tun

The Affordable Mash Lauter Tun
four different configurations

Our Deluxe Sparge Arm is now included with all Mash Tun orders A flat false bottom draws more evenly preventing channeling and dry spots thermometer mounting threads - sight glass -high extraction rates - extra threads for RIMs and other uses To make great whiskey you must first make great beer

Use & Care for the MiniBrew Mash Lauter Tun

mt15, mt6.5 & mt6.5b

Dear Small Batch Brewer,

With a MiniBrew Mash Lauter Tun you have the opportunity to make your own wort. This gives you more flexibility to brew great beer. The new mt6.5 is designed for five gallon batches. Please fill out the registration card. If you have a good idea or addition to our product line, give us a call. All ideas we use will be rewarded with a free gift. We’d like to know what’s brewin’. We would also like to know what is distilling.


Proven, time tested design, higher yields.
A flat screen covering the whole bottom will draw more evenly preventing channeling.
The liquid will draw evenly and not be sucked toward one point in the tun.
Flat screen makes a superior filter and there is less chance of a stuck mash.
Our false bottom provides good screen support.
It is easier to stir without disturbing the filter bed when you have a flat false bottom.
The brew bucket (mt6.5 & mt5) will not hold the heat as well as MiniMash Lauter Tun (mt15)
Consider a towel or blanket in colder areas for holding in the heat.
The Minibrew Deluxe Sparge Arm distributes water gently and evenly across the complete grain bed.
Channeling will more likely occur in slit pipe drains, domed shaped or a perforated tube screen.
Extra threads are provided in the sides for creative ideas such as a RIMs or HERMs.
The Deluxe MiniBrew Sparge Arm 9 (sa9) or 12 (sa12) only requires a twelve inch water drop.
The Sparge Arm spins slowly, gently sprinkling hot water onto the grain bed.
Open or close the valve to speed up or slow the sparge arm speed.


The Deluxe Mash Lauter Tun orders include everything needed to mash and lauter. Please see the ‘Parts List’ section for a list of what you may elect to supply with the various configurations. Please check all parts delivered against the list on page five of these instructions. If fittings or parts are missing, ask the retail dealer where you purchased the product or notify the Hobby Beverage Equipment Company. To begin, clean everything thoroughly, warm the vessel and start cooking the grain. See parts list and assemble instructions below.

Thank you for purchasing our professionally designed MiniBrew equipment.

Cheers and Happy Brewing,

Hobby Beverage Equipment Company


The Mash lauter tun with a flat false bottom is the vessel used to mix broken grain with hot water. This process converts grain starches to fermentable sugars. It is the most widely used method of wort separation in the world today. The lauter tun is a filtering system where the husks act as the filter. The mash tun is where the malted grains are cooked. The cooking process accelerates the enzymatic activity started in the malting process and dissolves the sugars into solution. The thick polyethylene wall holds the heat better that is transfers heat (cools) slower than stainless steel or copper. The mash temperature can be regulated by adding hot water from a MiniHot Liquor Tank or kettle or by insulating the outside with a blanket or any insulating material. Brewers may be concerned about extraction efficiency; the amount of wort obtained from a given amount of grain. The issues that effects efficiency are depth of the grain bed, pH, run off time, channeling, filter type, (flat screen, domed screen or perforated pipe) cooking temperatures, grain bed compaction and water level in the tun. Over suction with a RIMs pump or just a wide open valve may also be a cause. A dome screen or perforated pipe tend to draw unevenly and therefore give a low extraction rate. A flat false bottom draws from the whole grain bed rather than a specific suction point. The sight glass is helpful in maintaining the liquid balance.


Mill the grain into grape nut size chunks. If each grain (wheat or barley) was broken into thirds, you would have the grain mill set about right. You should not have a lot of powdered grain or broken husks.


Warm the MiniMash Tun before use by filling with hot water. Use water hotter than you want the expected grain cooking temperature. Once the tank is warm, dump the water and start the filling process.


Fill the Mash Tun with water at the temperature in the recipe until it reaches the top of the screen. Pour in enough grain to cover the false bottom plus a few inches. The stainless steel bolt in our deluxe model prevents the screen from floating. When using the Affordable Mash Lauter Tun you may need to hold the false bottom down with the stirring fork until you have enough grain on top to hold it in place. Add water and more grain as quickly as possible so that all grain is wet. Check the temperature. Cold grain will lower the water temperature about ten degrees. Experiment so you know what temperature drop you expect. Good records will assist with the adjustments necessary to become more accurate with future brews. Record temperature, pH and time in your log. This comes in handy and provides records in case you want a repeat performance for that winning brew.


Maintain the predetermined temperature by adding hot water. Recirculation may pick up husks and other small matter. You can always drain wort out the bottom into a bucket. Warm it and pour back into the top. Consider using the threads at the top rear of the tun as a wort inlet. Check the pH level during the process and adjust accordingly. See research articles that discuss temperature levels, the amount of water verses amount of grain and cooking time. Generally it takes about ninety minutes to cook the grain.


Once the grain is cooked, the sweet wort must be filtered out. About twelve inches of gravity creates enough pressure to run the MiniSparge Arm. The top of the grain bed should be one or two inches below the top sight glass hole. Leave enough room for 1 /2 inch or less of hot water on top of the grain. Research “Tips from the Pros” in Brew Your Own Magazine. The mash solids form the filter bed on the false bottom. The filter bed is made up of the husks and dough-like fines increasing in size, until the top layers consist of broken grain. I like to call the grain broken verses crushed, as crushed grain may slip through the false bottom. The gentle circulation of the liquid and grain in the MiniMash Lauter Tun helps to establish the filter bed. Raking the grain above the false bottom occasionally, helps the husks to settle, forming a good filter and helps to prevent channeling. Do not disturb within 1 /2 an inch of the false bottom. A wide piece of plastic or stainless steel fork with four or five tines bent in the shape of a rake will work as a tool to mix and stir the grains. Stir the grain again so particles are free to settle randomly on the screen. The filter bed is critical to the sparge process. Some brewers say, “the filtering action of the lauter tun may be one of the most important steps in the brewing process.” Stirring prevents channeling and compaction of the bed. When the wort is ready, it will run clear and can be drained directly into the kettle for boiling.


Wort can become infected when transferred from the tun to the kettle. The hose from the MiniMash Lauter Tun should reach to the bottom of the kettle. If your kettle has a lower valve, fill the kettle through this valve and leave the kettle covered. In any case, do not let the wort splash on the bottom. A closed hose system is ideal to prevent infection.


Brew Your Own Magazine ( and Zymurgy Magazine ( have many articles plus A FAQ section where you can e-mail the experts. If you own a still or want to learn more about distillation go to Just remember, if you want to make great whiskey you first have to make great beer.


Clean all parts before assembling. Once assembled clean again. Rub the inside thoroughly with a soft cloth and a nonabrasive cleaner. A Teflon© type cleaning pad may be used. Always be careful to remove all residues from inside the MiniMash Lauter Tun after use. A diluted solution of bleach works well for sterilization. The sight glass is Teflon and will tolerate very hot temperatures. The last step is to sterilize. Pour 180 degree water over everything. The heat sinks into the plastic killing all bacteria.


MiniBrew System products are manufactured from high quality food grade high density polyethylene. The molding process creates a stress free product. A scratch could create a place for bacteria to grow. Many say, “a scratch will ruin plastic.” If this is true, will a scratch also ruin stainless steel? Plastic can be sterilized by pouring 180 degree water down the sides. The heat sinks into the plastic killing all bacteria. Also, the scratch can be repaired by scraping (you must grind then polish stainless steel) away the plastic around the edges widening the width of the scratch. This allows cleaning agents to get into the area. Threads are molded separately for added strength and quality, then spin welded in place. The welds and all plastic material used is food grade.
The plastic resins used are HD-8600 series Escorene linear high density polyethylene. This tough food grade plastic is resistant to all chemicals used in the brewing process. The plastic melts at 240 °. Your new equipment will last a lifetime with proper care.


Please see mt6.5a and b if you would like to supply certain parts
The Deluxe Mash Lauter Tun 15 (mt15) Parts include:

1      Flat False bottom 14”
1      Professionally Designed Mash Lauter Tun bucket
1     1/2” lead free ball valve
1     Lid with Sparge Threads
1     Deluxe Sparge Arm (sa12)
1     Bolt, wing nut and washer (8/32X1.5”)
2    1/2“ npt X 3/8 barb connectors - 1/2 to 3/8 inch tubing reducer
3    1/2” npt plugs for thermometer hole threads and RIMs threads
2    1/2” threaded nipples
1    Sight Glass and Fitting installed at the factory
1    Teflon Tape

The Affordable Mash Lauter Tun 6.5 (mt6.5) Parts include:

1      Flat false bottom 10”
1      Brew Bucket 6.5 gallons
1      Plastic Valve
1      Lid Drilled for Sparge Arm
1      Deluxe Sparge Arm (sa9)
5      Bolts, nuts and wing nuts (6/32X3”)
1      Nylon washer 1.5” OD X 7/8” ID
2      Red O rings
1     Teflon Tape

The Affordable Mash Lauter Tun 6.5a (mt6.5a) Parts include:

1      Flat False Bottom 10”
1      Lid Drilled for Sparge Arm
1      Deluxe Sparge Arm (sa9)
5      Bolts, nuts and wing nuts (6/32X3”)
1      Nylon washer 1.5” OD X 7/8” ID
2      Red O rings
1      Teflon Tape
        Brew elects to supply brew bucket & valve

The Affordable Mash Lauter Tun 6.5b (mt6.5b) Parts include:

1      Flat False Bottom 10”
1      Deluxe Sparge Arm (sa9)
5      Bolts, nuts and wing nuts (6/32X3”)
1      Nylon washer 1.5” OD X 7/8” ID
2      Red O rings
1      Teflon Tape
        Brew elects to supply brew bucket, valve, lid with 7/8” hole in center

The Mash Lauter Tun Group

Affordable Mash Lauter Tun f6.5

Affordable False Bottom the f6.5 Series

Deluxe Mash Lauter Tun (f15b)

Deluxe Sparge Arm 9 and 12 (sa9 & sa12)


Mash Lauter Tun 15 gallon (mt15b)

1.      Clean and sterilize everything. Use a clean tooth brush in the threads.
2.      Teflon wrap all threads - Do not over tighten the fittings.
3.      Screw the 1/2” nipple (short pipe) into the true bottom thread left of the label.
4.      Screw the 1/2” valve onto the 1/2” nipple. Be careful not to cross thread. After a few turns look at the valve. Is it going in straight? Stop and check.
5.      Screw one npt barb connector into the outside top of the lid and the other connector into the valve.
6.      Screw the 1/2” thread on the sparge arm (sa12) into the thread inside the lid.
7.      Push the 3/8” hose from hot water source on to the 3/8” barb connector on the lid.
8       If you purchased a thermometer screw it in place above the false bottom. Otherwise use the 1/2” plug to block the hole.
9       Place the screen on the false bottom ledge and rotate until the bolt protrudes through the center hole of the false bottom. Place the washer on the bolt and tighten securely with the wing nut. If the false bottom bows downward turn it over so tightening the center wing nut presses the screen edges tight against side ledge. Make an L shaped hook out of a wire coat hanger for lifting the screen off the bottom after removing the wing nut.
10      Screw the remaining 1/2” plugs into the unused threads. The extra threads can be used for a RIMs hook up or as a by pass inlet into the top.
11      Clean and sterilize everything.

Mash Tun 6.5 Gallon Brew Bucket (mt6.5)

1       There are three different configuration for the Affordable Mash Lauter Tun.
Screw the nuts onto the bolts about 2/3 of the way toward the bolt head. It is easier to screw the bolts into the false bottom with an electric screw driver. However, screw the bolt into the false bottom far enough so the legs sit on the bottom of the tank and the screen is high enough to clear the valve nut. Place the bolts in from the edge about three or four holes. Place one in the center of the false bottom for support. Place the false bottom into the tank. Check to see if it is level and above the valve nut. With all in place, tighten the wing nuts on the bottom.
2      Drill a 7/8 inch hole in the lid of the brew bucket. Place an O ring onto the white threads of the sparge arm (SA9). Push the threads through the hole in the lid from the inside. Place the white washer onto to threads covering the hole. Place a red O ring onto the threads. Screw the female connector onto the sparge arm threads. Screw the thread barb connector onto the female
3      Clean and sterilize everything

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