Distillation Yield Calculator — Production Output Estimator
Estimating distillation yield is essential for production planning, cost analysis, and regulatory compliance. The amount of spirit you collect depends on the wash volume and ABV, still type and efficiency, and where you make your cuts between foreshots, heads, hearts, and tails. This calculator provides estimates based on standard craft distillery parameters.
Estimate Distillation Output
Distillation yield estimates are based on general craft distillery parameters. Actual yield depends on equipment efficiency, fermentation completeness, still design, operator skill, and environmental conditions. All distillation must comply with federal (TTB) and state regulations. Operating a still without proper permits is illegal in the United States.
Understanding Distillation Cuts
Foreshots (first 1–2%)
The first liquid off the still contains methanol and highly volatile compounds. Foreshots are always discarded. They have a sharp, solvent-like smell and are unsafe to consume.
Heads (next 10–20%)
Heads contain acetone, acetaldehyde, and other low-boiling-point compounds. They have a harsh, nail-polish-remover character. Experienced distillers may redistill heads into future batches or discard them entirely.
Hearts (60–70% of a typical run)
The hearts are the desirable portion — clean, flavorful spirit. The transition from heads to hearts is gradual and requires sensory evaluation. Tight hearts cuts produce cleaner spirit; wider cuts capture more flavor but also more congeners.
Tails (final 10–20%)
Tails contain heavier fusel alcohols and oils. They taste oily and vegetal. Like heads, tails can be redistilled (called “feints” in Scotch production) or discarded.
Frequently Asked Questions
How much spirit does a gallon of wash produce?
A general rule: 1 gallon of 8% ABV wash produces approximately 0.5–0.7 liters of 65% spirit after double distillation with a 60% hearts cut. Actual output varies with still efficiency and the tightness of your cuts.
Why does a column still produce higher ABV than a pot still?
A column (reflux) still provides multiple stages of distillation in a single pass. Each plate or packing section acts like an additional distillation, stripping away more water and congeners. A pot still achieves only one stage per pass, which is why whiskey and brandy (typically pot-distilled) require two or three runs.