Young's

Fermentation Stopper (Wine Stabiliser) 25g

£2.99

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Fermentation Stopper is a wine stabiliser based on potassium sorbate. Add it once your wine has finished fermenting to stop any leftover or added sugar from starting a new fermentation in the bottle.

Why use it

Stops yeast from re-fermenting residual or added sugar
Lets you sweeten a finished wine safely before bottling
Helps prevent popped corks and fizzy, over-pressurised bottles
Works in wine and cider

Specs

Contents: 25g
Active ingredient: potassium sorbate

Good to know

Despite the name, it won't halt an active, bubbling ferment - it stops yeast from starting up again. Add it after fermentation has finished, together with Campden Tablets. Dosing is in the How to Use box below.

Goes well with

Wine Sweetener - sweeten to taste once stabilised
Young's Wine Finings - clear the wine before bottling
Wine & Beer Hydrometer - check fermentation has really finished

For any wine maker who likes a medium or sweet wine, or wants to bottle with confidence.

Wine Stabiliser (Potassium Sorbate)

How to Use

Dose

½ tsp per gallon

about 1g - 5g per 23L

Use with

1 Campden per gallon

When

After fermentation

Used for: Stops a finished wine or cider re-fermenting in the bottle - essential if you sweeten before bottling.

When: Only after fermentation has completely finished (same hydrometer reading 2-3 days running) and the wine has been racked off its sediment.

Step by step

1Check fermentation has finished.

2Rack the wine off its sediment.

3Dissolve ½ teaspoon (about 1g) per gallon in a little warmed wine, adding 1 crushed Campden tablet per gallon at the same time.

4Stir into the batch, stirring now and then over about 3 days.

5Sweeten if you want to, then bottle.

Good to know: It won't stop an active fermentation. Always use with Campden tablets - on its own it can leave a geranium-like smell. Don't use in wines that have been through a malolactic ferment.

You may also need: Campden Tablets · Wine Sweetener · All treatments & nutrients

Frequently Asked Questions

How much do I use?

½ teaspoon (about 1g) per gallon, or about 5g per 23 litres - together with one Campden tablet per gallon.

Will it stop my wine fermenting right now?

No - it only prevents re-fermentation once fermentation has finished. Wait for steady hydrometer readings first.

Do I need Campden tablets as well?

Yes - always use it with Campden tablets to protect the wine and avoid a geranium-like off-smell.

Do I need it for dry wine?

Usually not - it's mainly for when you sweeten a wine before bottling.

Country/region

Fermentation Stopper (Wine Stabiliser) 25g