Ginger Beer
Ingredients
- 250g white sugar
- 250g brown sugar
- 200g fresh root ginger
- 120ml lemon juice, roughly 1/2 cup
- 1 medium chilli, optional
- 4.5 litres water
- US-05 yeast
Equipment
- Fermentation vessel / demijohn with airlock
- Hydrometer
- Siphon or strainer
- Sterilised bottles
- Saucepan / brew kettle
- Grater
- Funnel
- Sanitiser
Method
1. Clean and sanitise
Clean and sanitise all equipment that will touch the ginger beer, especially the fermentation vessel / demijohn, airlock, spoon, funnel, bottles and siphon or strainer.
2. Prepare the ginger and lemon
Wash the ginger under cold water, scrub away any dirt, and remove any damaged sections. Grate the ginger into a clean bowl.
Juice the lemons and measure approximately 120ml of lemon juice.
3. Boil and cool the water
Boil the full 4.5 litres of water in two parts:
- 1 litre for making the ginger wort
- 3.5 litres to be cooled separately before adding to the fermentation vessel / demijohn
Allow the 3.5 litres of boiled water to cool fully before adding it to the fermentation vessel / demijohn. Room temperature may be higher than 20°C, and the water will not naturally cool below room temperature. Cool the water to the higher of 20°C or room temperature before using.
4. Make the ginger wort
Add 1 litre of boiled water to a saucepan / brew kettle.
Slowly add the white sugar and brown sugar, stirring until fully dissolved.
Add the grated ginger and simmer gently for 10-15 minutes, stirring occasionally. Avoid using a wooden spoon, as it can be harder to sanitise properly.
Add the lemon juice and chilli, if using.
Turn off the heat, cover the pan, and allow the mixture to cool. Room temperature may be higher than 20°C, and the wort will not naturally cool below room temperature. Cool the wort to the higher of 20°C or room temperature before combining it with the rest of the water.
5. Activate the yeast
During the later stage of cooling, take a small amount of the boiled and cooled water from the remaining 3.5 litres and add it to a clean, sanitised mug.
Room temperature may be higher than 20°C, and the water will not naturally cool below room temperature. Cool the water to the higher of 20°C or room temperature, but make sure it is below the maximum temperature the yeast can tolerate before adding the yeast.
Add 1/4 teaspoon of sugar and stir to dissolve.
Sprinkle in the yeast, cover the mug, and put it to one side. Keep an eye on it, as the yeast can foam and rise in the mug.
6. Combine the wort and water
Add the cooled 3.5 litres of boiled water to the fermentation vessel / demijohn.
Add the cooled ginger wort to the fermentation vessel / demijohn, making sure the ginger is included.
Stir or swirl gently to combine.
7. Take the original gravity reading
Take a hydrometer reading before pitching the yeast.
The original gravity should be roughly 1.042, giving a finished ginger beer of around 5% ABV if fermented close to dry.
8. Pitch the yeast
When the liquid has cooled to the higher of 20°C or room temperature, and is below the maximum temperature the yeast can tolerate, add the activated yeast.
Fit the airlock, leaving adequate headspace in the fermentation vessel / demijohn.
9. Ferment
Leave the ginger beer to ferment somewhere close to 20°C if possible. Room temperature may be higher than 20°C, and the ginger beer will ferment at the temperature of the room unless active temperature control is used. Choose the coolest stable room available if the room is warmer than this.
Fermentation may take 2-4 weeks. Once airlock activity slows, take a hydrometer reading.
Fermentation is complete when the gravity is stable over at least two consecutive readings taken 48 hours apart. For a dry ginger beer, the final gravity will usually be close to 1.000-1.010.
10. Remove ginger sediment
Once fermentation has finished, siphon or carefully strain the ginger beer into a clean, sanitised vessel, leaving behind as much ginger sediment as possible and avoiding splashing.
Clean the original fermentation vessel / demijohn thoroughly, then return the strained ginger beer to it if you want it to settle further.
Leave for a couple of days to clear and settle.
11. Take final gravity
Take a final hydrometer reading so the finished ABV can be calculated using the ABV calculator.
12. Bottle condition
Important: Only bottle once fermentation has fully finished and the gravity is stable over at least 48 hours. Bottling too early can cause over-carbonation, gushing bottles, or bottles bursting under pressure.
Bottle into clean, sanitised bottles.
For carbonation, add:
- 1/2 teaspoon sugar per 330ml bottle
- 1 teaspoon sugar per 750ml bottle
Leave approximately 1.5cm of headspace at the top of each bottle.
Seal the bottles and leave at room temperature for around 2 weeks to carbonate.
Chill before opening.