Heals wrote:What's involved in making a starter? Is it hard?
G'day Heals,
If you're using dry yeast, all you need to do is rehydrate the yeast in preboiled and cooled water. Dry yeast sachets come with their own compounds, specifically trehalose, that gives the yeast a real kick in the shorts as soon as the particles hit the water. A quick and easy way to proof the yeast is as follows:
1. Haul the sachet out of the fridge on brewday to bring to room temp,
2. About 30 mins before you're ready to pitch the yeast, add 200ml of the preboiled and chilled water (aim for 20C) into a pre-sanitised pyrex jug or cup and sprinkle the dry yeast on top of the water. Seal vessel with glad wrap and leave in a dark cupboard.
3. After 20 mins you'll see a pale tan creamy pavlova like foam on top of the water's surface - that's proof positive that the yeast cells have been reconstituted with water and are ready to get stuck into your wort's sugars.
4. Rack the cooled wort into your clean fermenter, pitch the hydrated yeast once the wort is at or below 20C and seal.
Easy.
The only time you need to feed yeast in a starter with some malt extract or a cooled down quantity of the boiled wort is if you're using liquid yeast from a wyeast smack pack or white labs tube - and in some cases, it's not impossible to get a start by simply pitching the smack pack or tube straight into the fermenter. For lagers, I prefer to step up a liquid yeast smack pack or tube in an erlenmeyer flask so I have 2L of active yeast and stuff all lag time - that means that I've been making and building up the yeast starter for a few days before the brewday so a bit of prior planning prevents piss poor performance!
Cheers,
TL