This is about yeast, but not any particular product (beer, wine, cider). I hope this is the correct place for this question, rather than cross-posting to all the sub-forums.
If there is a better place for this, please let me know or go ahead and move it.
Older books always seem to require "proof"ing yeast.
As I understand it,
* put about 100mL of water and invert sugar in an (imperial) pint glass and cover
*when the water is at about 25C add some yeast
*mix and let stand to do its stuff
*Add active yeast to must/wort etc.
Things I am not clear about:
* I'm not too sure how to invert sugar. Something to do with heat and acid?
* How much yeast to use: if it takes off that is enough yeast? if it does not take off add some more? (if it never takes off you are just wasting defunct yeast anyway)
* Is the 'active yeast' the whole lot froth and all?
* what size batch will a pint glass ferment? Presumably there are a lot more yeasties in the glass than a packet of yeast.
* Does the glass need to be kept full?
* How long can you keep the glass going before using it?
Thanks for helping with these beginner questions.
If there is a better place for this, please let me know or go ahead and move it.
Older books always seem to require "proof"ing yeast.
As I understand it,
* put about 100mL of water and invert sugar in an (imperial) pint glass and cover
*when the water is at about 25C add some yeast
*mix and let stand to do its stuff
*Add active yeast to must/wort etc.
Things I am not clear about:
* I'm not too sure how to invert sugar. Something to do with heat and acid?
* How much yeast to use: if it takes off that is enough yeast? if it does not take off add some more? (if it never takes off you are just wasting defunct yeast anyway)
* Is the 'active yeast' the whole lot froth and all?
* what size batch will a pint glass ferment? Presumably there are a lot more yeasties in the glass than a packet of yeast.
* Does the glass need to be kept full?
* How long can you keep the glass going before using it?
Thanks for helping with these beginner questions.
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