manticle
Standing up for the Aussie Bottler
Don't freak out too much. A lot of technical stuff is interesting and probably makes better brews but it's not always essential to being able to brew a tasty drop. Some demystification can be a good thing.
To make a starter from a smack pack of liquid yeast I smack and allow to swell. I go by the rule of 1/2 day for every month since manufacture so obviously buying fresh yeast is a good idea.
While it swells I boil the kettle and pour off approximately 2 litres into a stainless steel bowl. I add a couple of hundred grams of dme, whisk then cover with glad wrap and allow to cool to 18 degrees.
When the pack has swelled and been left the appropriate amount of time, I pitch into the dme mixture, whisk again (whisk is always clean and sanitised as is the thermometer), cover and leave again. When foam begins on the surface I consider it ready for pitching.
This method is not perfect but unless you're building up a lager starter (which is a larger starter ha ha ha) or building from a slant or building for a 1090 wort, I reckon this is sufficient. The only time it's failed me was when making a pilsner and I probably should have been making a double size starter for that. Smack packs are supposedly sufficient without starting for an average wort so any building is going to help.
With ciders, nutrient in addition to the yeast is recommended.
As I keep the yeasty wort around 18 I don't feel the need to pour off the top liquid. I also don't ferment right out which is recommended by some people. As with all things - just because a method works doesn't mean it's the best one around. Mine works - it may not be the best one around but it's simple enough to try for your first few until you're comfortable with everything.
To make a starter from a smack pack of liquid yeast I smack and allow to swell. I go by the rule of 1/2 day for every month since manufacture so obviously buying fresh yeast is a good idea.
While it swells I boil the kettle and pour off approximately 2 litres into a stainless steel bowl. I add a couple of hundred grams of dme, whisk then cover with glad wrap and allow to cool to 18 degrees.
When the pack has swelled and been left the appropriate amount of time, I pitch into the dme mixture, whisk again (whisk is always clean and sanitised as is the thermometer), cover and leave again. When foam begins on the surface I consider it ready for pitching.
This method is not perfect but unless you're building up a lager starter (which is a larger starter ha ha ha) or building from a slant or building for a 1090 wort, I reckon this is sufficient. The only time it's failed me was when making a pilsner and I probably should have been making a double size starter for that. Smack packs are supposedly sufficient without starting for an average wort so any building is going to help.
With ciders, nutrient in addition to the yeast is recommended.
As I keep the yeasty wort around 18 I don't feel the need to pour off the top liquid. I also don't ferment right out which is recommended by some people. As with all things - just because a method works doesn't mean it's the best one around. Mine works - it may not be the best one around but it's simple enough to try for your first few until you're comfortable with everything.