Chapter I

The Fermentation

Compose the mash bill, appoint the fermenter, and read the projected wash strength.

The Mash Bill

Add fermentables one by one.

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IngredientWeight (g)

No ingredients added yet.

Fermenter & Wash

Choose on- or off-grain, then size the wash and set mash efficiency.

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Fermentation Mode

Off-grain: we calculate water to reach fermenter target. On-grain: enter the wort volume you already have.Fermenter Size (L)Headroom (%)Space left above the wash for foam and CO₂.Mash Efficiency (65%)

Rough (50%)Home (65%)Good (80%)Lab (100%)

Fraction of the theoretical grain sugar that actually makes it into the wash. Sugars/syrups always convert at ~100%.

Target Wash

25.5L

Ingredient Vol.

0.00L

Water to Add

25.5L

Est. Wash ABV

0.00%

Yeast Selection

Chosen for the intended spirit — with pitch rates for your wash.

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Intended Spirit

Recommended

Still Spirits Turbo Pure 25 kg

Very neutral, high-alcohol sugar-wash turbo.

Pitch

20.4 g

(0.8 g/L)

4.5–5.5

Recommended

Still Spirits Classic 8

Slower, cleaner than a fast turbo — better neutral base.

Pitch

20.4 g

(0.8 g/L)

4.5–5.5

Recommended

SafSpirit C-70

Very clean, neutral, high ABV tolerance.

Pitch

12.8 g

(0.5 g/L)

4.5–5.5

Recommended

Baker's Yeast

Works but leaves more congeners — plan more cuts.

Pitch

51.0 g

(2 g/L)

4.5–5.5

Nutrients, Enzymes & pH

Support the yeast; convert the starch; keep the pH honest.

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Target pH

4.5–5.5

DAP

12.8g

Yeast Nutrient

7.6g

Enzymes

—

pH: before pitching, adjust the wash to 4.5–5.5 using citric acid (to lower) or calcium carbonate (to raise). Below 4.0 stalls; above 6.0 invites bacteria.
DAP: diammonium phosphate provides nitrogen. Sugar/molasses washes are nitrogen-starved and need ~0.5 g/L; grain washes already carry nitrogen so half that is plenty.
Yeast nutrient: a complex blend (e.g. Fermaid-O, boiled yeast hulls) at ~0.3 g/L covers vitamins, sterols and micro-nutrients.

Nutrient option

Still Spirits Distillers Nutrient

25.5 g

(1 g/L wash)

Good all-round Still Spirits nutrient for sugar and molasses washes; follow the label if your packet differs.

Nutrient option

Still Spirits Yeast Nutrient

25.5 g

(1 g/L wash)

Use as the Still Spirits nutrient option when pitching non-turbo yeasts into a low-nutrient wash.

Nutrient option

Complex nutrient blend

7.6 g

(0.3 g/L wash)

Fermaid-style nutrient or boiled yeast hulls for vitamins, sterols, and trace minerals.

Alcohol Content of the Wash

Measure with a hydrometer before and after fermentation.

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Starting Gravity (OG)Before pitching yeast.Final Gravity (FG)When fermentation has finished.

Wash ABV

11.81%

Formula: ABV ≈ (OG − FG) × 131.25. A stable FG on two consecutive days means fermentation is done.

Recipe Presets

Save the current mash bill and settings under a name, then reload it any time.

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Preset name

No presets saved yet.

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