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Fermonster - The World's Biggest Wide-mouth Carboy

Effortless Cleaning: The wide 4" mouth lets you reach right in to tackle those dirty shoulders and edges. Plus, the smooth, rib-less sides minimize residual yeast build-up for easier cleaning and racking.

Maximize Your Yield: The cleverly indented bottom allows you to extract more liquid and less sediment when racking. Crystal-clear construction with volume markers ensures accurate measurements every time.

Safe & Secure: Made from 100% food-grade BPA-free plastic, this fermenter is built to last. Note: When using hot water, do not exceed 52° Celsius.

  • Rubber Stopper - Drilled Carboy Bung for Fermonster (#10) - Toronto Brewing
    $3.29 - $3.29
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    Rubber Stopper - Drilled Carboy Bung for Fermonster (#10)

    Fits the Fermonster Carboys and Better Bottle Carboys. Rubber stoppers provide an air-tight seal to carboys, necessary for proper fermentation. BPA...

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    $3.29 - $3.29
    $3.29
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  • Carboy - 6 Gallon Fermonster Wide-Mouth PET Fermentor - Toronto Brewing
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    $49.99
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    $42.99
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    $42.99

    Carboy - 6 Gallon Fermonster Wide-Mouth PET Fermentor

    Light but durable BPA-free PET plastic fermentor, with a 4" wide mouth big enough to fit your whole hand. 4" Wide Mouth BPA-free PET Plastic Inclu...

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    $49.99
    $49.99 - $49.99
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    $42.99
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    $42.99
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  • Rubber Stopper Solid Bung for Better Bottle and Fermonster (#10) - Toronto Brewing
    $0.00 - $0.00
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    $4.39
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    Rubber Stopper Solid Bung for Better Bottle and Fermonster (#10)

    Rubber stoppers provide an air-tight seal to carboys, necessary for proper fermentation. BPA free and made out of Food Grade materials. Maximum T...

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  • Carboy - 7 Gallon Fermonster Wide-Mouth PET Fermentor - Toronto Brewing
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    $52.99 - $52.99
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    Carboy - 7 Gallon Fermonster Wide-Mouth PET Fermentor

    Light but durable BPA-free PET plastic fermentor, with a 4" wide mouth big enough to fit your whole hand. 4" Wide Mouth BPA-free PET Plastic Inclu...

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    $52.99 - $52.99
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  • Fermonster | Lid Opener - Toronto Brewing
    $6.59 - $6.59
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    Fermonster | Lid Opener

    This easy to use lid opener will quickly open your FerMonster without struggling with a tight, slippery cap. Will work with either the 6 or 7 gallo...

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  • Carboy - 1 Gallon Fermonster Wide-Mouth PET Fermentor - Toronto Brewing
    Carboy - 1 Gallon Fermonster Wide-Mouth PET Fermentor - Toronto Brewing
    $21.99 - $21.99
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    Carboy - 1 Gallon Fermonster Wide-Mouth PET Fermentor

    Durable BPA-free PET plastic fermentor, with a 4" wide mouth big enough to fit your whole hand. 4" Wide Mouth BPA-free PET Plastic Includes airtig...

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    $21.99 - $21.99
    $21.99
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    $21.99
  • Monster Mesh FerMonster™ Strainer - Toronto Brewing
    Monster Mesh FerMonster™ Strainer - Toronto Brewing
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    $7.69 - $7.69
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    Monster Mesh FerMonster™ Strainer

    Custom made for FerMonsters and Vintage Shop PET Carboys providing a perfect seal. Use to reduce the headspace on any of Vintage Shop PET Carboys...

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  • Carboy - 7 Gallon Fermonster Wide-Mouth PET Fermentor with #10 Drilled Stopper and Airlock - Toronto Brewing
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    $57.99
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    $57.99

    Carboy - 7 Gallon Fermonster Wide-Mouth PET Fermentor with #10 Drilled Stopper and Airlock

    Light but durable BPA-free PET plastic fermentor, with a 4" wide mouth big enough to fit your whole hand. Comes with a #10 Drilled Rubber Bung/Stop...

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  • Carboy - 1 Gallon Fermonster Wide-Mouth PET Fermentor with #10 Drilled Stopper and 3-Piece Airlock - Toronto Brewing
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    $27.49
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    $26.49
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    Carboy - 1 Gallon Fermonster Wide-Mouth PET Fermentor with #10 Drilled Stopper and 3-Piece Airlock

    1 Gallon Fermonster with #10 Drilled Rubber Stopper and 3-Piece Airlock.  Light but durable BPA-free PET plastic fermentor, with a 4" wide mouth bi...

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    $27.49
    $27.49 - $27.49
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    $26.49
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  • Carboy - 6 Gallon Fermonster Wide-Mouth PET Fermentor and #10 Drilled Stopper and 3-Piece Airlock - Toronto Brewing
    $55.49 - $55.49
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    Carboy - 6 Gallon Fermonster Wide-Mouth PET Fermentor and #10 Drilled Stopper and 3-Piece Airlock

    Light but durable BPA-free PET plastic fermentor, with a 4" wide mouth big enough to fit your whole hand. 4" Wide Mouth BPA-free PET Plastic Inclu...

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    $55.49 - $55.49
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  • Fermonster | Replacement Lid (Solid) - Toronto Brewing
    $7.69 - $7.69
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    Fermonster | Replacement Lid (Solid)

    Solid Lid for Fermonster PET Fermenter. Excellent for cleaning after primary fermentation - fill the carboy with 1 gallon of PBW solution and turn ...

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    $7.69 - $7.69
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  • Fermonster | Replacement Lid O-ring - Toronto Brewing
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    Fermonster | Replacement Lid O-ring

    Replacement O-ring for the 6 and 7 Gallon FerMonster Lid. Replace your old and worn o-rings with new ones regularly to ensure tight seals and preve...

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    $3.29
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  • Universal Stopper - Solid Carboy Bung for Fermonster (#10) - Toronto Brewing
    Universal Stopper - Solid Carboy Bung for Fermonster (#10) - Toronto Brewing
    $0.00 - $0.00
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    $2.99
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    Universal Stopper - Solid Carboy Bung for Fermonster (#10)

    Solid, plastic bung with longer taper. Fits a wider range of demi-johns and carboys. Lip prevents bung from falling into carboy. 41 mm - Bottom 51 ...

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    $2.99
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  • Carboy - 7 Gallon/27 Litre - Fermonster Wide-Mouth PET Fermentor with Spigot - Toronto Brewing
    Carboy - 7 Gallon/27 Litre - Fermonster Wide-Mouth PET Fermentor with Spigot - Toronto Brewing
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    $44.98 - $44.98
    $44.98
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    Carboy - 7 Gallon/27 Litre - Fermonster Wide-Mouth PET Fermentor with Spigot

    Light but durable BPA-free PET plastic fermentor, with a 4" wide mouth big enough to fit your whole hand. 7 US Gallon/27 Litre Spigot included 4" ...

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    $44.98 - $44.98
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    $44.98
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  • Rubber Stopper - Drilled Carboy Bung for Fermonster (#10) - Pack of 3 - Toronto Brewing
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    $9.87
    $9.87 - $9.87
    $9.87
    $9.49
    $9.49 - $9.49
    $9.49

    Rubber Stopper - Drilled Carboy Bung for Fermonster (#10) - Pack of 3

    Fits the Fermonster Carboys and Better Bottle Carboys. Rubber stoppers provide an air-tight seal to carboys, necessary for proper fermentation. BPA...

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    $9.87
    $9.87 - $9.87
    $9.87
    $9.49
    $9.49 - $9.49
    $9.49
    Save $0.38 Save $0.00
  • Fermonster | Replacement Lid - Toronto Brewing
    Fermonster | Replacement Lid - Toronto Brewing
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    $6.99
    $6.99 - $6.99
    $6.99
    $5.99
    $5.99 - $5.99
    $5.99

    Fermonster | Replacement Lid

    Replacement Lid for Fermonster PET Fermenter.  Hole fits a #10 Stopper/Bung.

    $6.99
    $6.99 - $6.99
    $6.99
    $5.99
    $5.99 - $5.99
    $5.99
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  • Mead and Cider Making Kit with Fermonster 1 Gallon Fermenter - Toronto Brewing
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    $34.59
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    $34.59
    $32.99
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    Mead and Cider Making Kit with Fermonster 1 Gallon Fermenter

    Everything you need to ferment 4 Litres of Mead or cider.  Honey/juice not included. 1 gallon Fermonster #10 stopper 3 piece airlock Lalvin D-...

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    $34.59
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    $34.59
    $32.99
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    $32.99
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