Just wanted to share a research expedition to contribute to this thread.
I was keen to make my first ginger beer that I went down to the local brew shop today, Country Brewer
(Sydney AU) and bought the Traditional Ginger Beer 600ml concentrate
for $19AUD. The pack contained 600ml of concentrate, a satchel of yeast nutrient & all purpose wine yeast (Lalvin EC-1118
The instructions supplied listed two recipes - alcoholic & non-alcoholic.
1- mix the ginger concentrate supplied with 1kb of raw or other brewing sugar in your fermenter. Add 2 litres of hot water & mix thoroughly until dissolved.
2- fill to total of 20 litres with cold water, add both yeast nutrient & yeast - Mix & place top onto fermenter & add water to the airlock.
3- fermentation will be apparent within 24-36 hours.
4- maintain temperature between 18-26°C for duration of fermentation.
5- fermentation can take up to 5-7 days.
6- clean & sterillise all bottles. Add sugar to bottles at a rate no greater 3g/375ml or 6g/750ml.
7- store upright away from sunlight for approximately 3-4 weeks at temps above 18°C.
8- Chill & Serve.
1- empty ginger concentrate with 200grams of sugar into fermenter, add 1 litre of hot water & mix thoroughly.
2- fill to total of 20 litres with cold water, add yeast & nutrient & fix lid.
3- allow to stand for 30mins (to rehydrate yeast) - stir & bottle.
4- store for at least 7 days above 18°C.
5- chill before serving.
So the above two recipes confirm most of what most posters have been saying in this thread, with regards to fermentation time. Maybe the shorter fermentation time in this non-alcoholic recipe may help in retaining the sweetness.
Another interesting point is the yeast used in this kit is an all purpose wine yeast.
When putting down the batch you could definitely smell the ginger & the colour became more like Bundeburg Ginger Beer, which is what I am trying to achieve.
My aim is to make a 'Bundeburg ginger beer', both alcoholic & non-alcoholic from raw ingredients, in 20 litre batches. But this concentrate seems pretty convenient & results depending may stick to this concentrate. Will post the results in 7 days time, when the non-alcoholic batch should be ready.
MrFoodScientist - I like your blog. It looks good & straight forward. Will be checking it out further to help me research my 'Raw 20L' with regards to ingredient ratios. Good work dude. http://homemadesodaexpert.blogspot.com/