Lactoferm Lactose 1kg — Milk Sugar for Milk Stout & Milkshake IPA

Lactoferm Lactose is milk sugar in a 1kg pack — the one sugar in brewing that doesn't ferment, which is precisely the point. Brewer's yeast lacks the enzyme to touch lactose, so every gram you add stays in the finished beer as permanent, stable sweetness and body: no ABV gained, no sugar lost, just a rounder, creamier, sweeter beer that holds that character from the first glass to the last bottle. It's the ingredient that put the milk in Milk Stout and the shake in Milkshake IPA.

Understanding what lactose actually does makes dosing intuitive. At roughly a fifth of table sugar's sweetness per gram, it's less a sweetener than a texture ingredient — the full, pillowy, dessert-like mouthfeel of a great sweet stout or milkshake NEIPA is lactose doing structural work, with gentle sweetness riding along. In a Milk Stout, 250–500g per 20 litres rounds roasted malt's edges into smooth, creamy chocolate territory; in a Milkshake IPA, the same dose stacked on an oat-heavy grist builds the soft, juice-and-cream body that defines the style, with fruit hops reading sweeter and riper against the lactose backdrop. Pastry stouts and smoothie-style sours push toward the top of that range and beyond. Add it in the final 10–15 minutes of the boil, where it dissolves completely and stays sanitary.

Two honest notes that belong on every lactose page. First, the allergen: lactose is dairy-derived — beers brewed with it are not vegan and not suitable for lactose-intolerant drinkers, so label accordingly when sharing, gifting, or entering competitions; it's declarable dairy. Second, the microbiology: while brewer's yeast can't ferment lactose, Brettanomyces and various souring bacteria can — in a clean beer the sweetness is rock-stable, but in mixed-fermentation and Brett programs lactose slowly becomes food, turning planned sweetness into unplanned carbonation. Keep it out of wild-side beers unless gushing bottles sound like fun.

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Key Features

• Unfermentable by brewer's yeast — permanent sweetness and body that survives fermentation completely
• The defining ingredient of Milk Stout and Milkshake IPA
• Builds creamy, full, dessert-like mouthfeel — texture first, gentle sweetness second
• Simple dosing: 250–500g per 20L, added in the final minutes of the boil
• Stable in clean beers from fermenter to final bottle
• 1kg pack — covers two to four batches at standard rates

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Usage

Stout: Milk Stout, Sweet Stout, Pastry Stout, dessert-leaning Imperial Stout
IPA: Milkshake IPA, fruited NEIPA, smoothie-style hazies
Specialty: Fruit smoothie sours (clean-fermented only), dessert ales

Dose: 250–500g per 20L in the final 10–15 minutes of the boil; push higher for pastry territory. Not fermentable — contributes no ABV and cannot be used for priming. Allergen: dairy — resulting beer is not vegan; avoid in Brettanomyces and mixed-fermentation beers.

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Quick facts

Brand: Lactoferm
Type: Lactose (milk sugar)
Pack size: 1kg
Fermentable: No (by brewer's yeast) — permanent sweetness and body
Sweetness: ~20% of sucrose — primarily a body and mouthfeel ingredient
Dose: 250–500g per 20L, end of boil
Allergen: Dairy — beer is not vegan, declarable
Caution: Fermentable by Brettanomyces and souring bacteria — clean fermentations only
Use: Milk Stout, Milkshake IPA, pastry stout, dessert beers

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Related products

• Castle Malting Chocolate Malt 900–1100 EBC — smooth cocoa roast plus lactose is the Milk Stout formula
• Dingemans Oat Malt MD 4.0 EBC — the oat-silk half of the milkshake mouthfeel stack
• LalBrew New England Dried Yeast 11g — peach esters over lactose cream: the milkshake NEIPA engine
• Yakima Chief Sabro Cryo Hop Pellets — coconut and tropical cream that lactose turns into dessert
• Vinoferm Glucose 1kg — the exact opposite tool: fully fermentable, body-drying, and the right sugar for priming