How
To Make A Sourdough Bread Starter Sourdough
bread starters are quite easy to make. They consist of two groups of micro-organisms:
- Bacteria: Lactobacilli
and other bacteria
- Yeasts:
Saccharomyces and other yeasts.
The
bacteria create lactic acid and substances that provide flavour, while the yeasts
create bubbles of carbon dioxide to make the bread rise. It is not unusual for
the consortium of microflora in a sourdough starter to change depending upon the
environment in which it is used. So a San Francisco starter used on the Gold Coast
of Australia may not get the same results as in its native town, San Francisco
To make a sourdough
starter you need only four things: 1.
A Container: Glass, Ceramic or Wooden. A
250 ml jar with a plastic lid is suitable. 2.
Flour. Use either wholemeal spelt, rye or wheat flour. Make sure there
are no raising agents in the flour. Rye is considered by some to be superior in
making a sourdough starter. 3.
A Source of Bacteria And Yeasts You can use any or all of the following
sources of microorganisms. - Kefir
whey.
- Rejuvelac.
- Grapes
or grape skins.
- Raisins,
sultanas or currants.
- Wild
organisms.
- Probiotic
culture.
Kefir
whey is made by straining milk that has been cultured with real Kefir grains
through unbleached linen. If you don't have Kefir you may try yogurt, though yogurt
does not contain the variety of microflora that real Kefir grains do. Rejuvelac
is 2-5 day fermented wheat grains. To make Rejuvelac add 1/2 cup of wheat
grains purchased from a health food store to 2 litres of water in a mason jar.
Cover the jar with muslin cloth to keep insects out. After 12 hours pour off the
water and rinse. Lay the jar on its side and sprout the grains until the rootlets
are between 1-2 mm long. The grains will need rinsing every 6-12 hours, depending
on the weather. In hot weather they may dry out and in humid weather they may
go off, but your sense of smell should alert you to this. Once
the rootlets are 1-2 mm long fill the jar with water and leave to ferment for
1-4 days, depending upon the temperature. The Rejuvelac is ready when it has become
milky with a light froth. It should taste slightly acidic with a not unpleasant
yeasty flavour. Hippocrates Health Centre on the Gold Coast of Australia serve
Rejuvelac as a tonic. Grape
Skins. Take 200 gm of good quality grapes. Rinse off debris and squeeze out
the juice through a hand juicer. Mix the skins and pips with flour and water to
make a starter. Alternatively just crush a handful of grapes with a potato masher
and mix the juice and pulp with flour and water.
Raisins. Raisins,
currants and sultanas will all provide a source of micro-organisms. Just add a
tablespoon of raisins to half a cup of flour and enough water to make a paste.
Both raisins and grape skins will produce a distinctive and highly active starter. Wild
organisms. Mix 1 cup of flour with enough water in a glass bowl to form a
thin paste. Cover the bowl with a piece of thin muslin and leave outside to trap
organisms from the air. Feed it 1/2 cup of flour everyday for 7 days. By the second
or third day it should form bubbles and give off a distinctive alcoholic yeasty
smell. Probiotics.
AGM Foods in Australia make a B.E. Grainfields liquid which is suitable for
making a sourdough starter. But be aware that it contains the same fast acting
yeast that is used to make commercial bread and brew beer, Saccharomyces cerevisiae,
but unlike this yeast when used by itself to make commercial bread the Grainfields
liquid will also provide 13 lactobacilli bacteria plus another yeast. (Note that
a starter made with Grainfields should be your last preference.) You could also
you use an EM culture to make a sourdough bread starter. 4.
Water Use the
best quality water you can find, otherwise tap water will probably work okay. PROCEDURE
Add 1/4 cup of flour to a jar and mix in a source of microorganisms from one
or more of the following: 1 tablespoon kefir whey, 1 tablespoon rejuvelac, 1 tablespoon
grape skins or 6 grapes, 10 raisins, or 1 tablespoon probiotic culture. Then add
enough water to make a thick paste. Gently screw on a plastic lid or cover the
jar with a cloth and leave on a bench top out of direct sunlight at about 28C.
Once a day for a week feed the culture with 2 teaspoons of flour and enough water
to maintain a smooth paste. The culture should begin its fermentation process
within 1-3 days, recognisable by the yeasty aroma, bubbles and alcoholic smell.
If you have used grape skins then after about four days strain out the grape skins
and pips through a piece of muslin. Each
culture will have its own characteristics. The grape starter may become quite
high in organic alcohol's, while the rejuvelac may provide a source of highly
active yeasts. You may wish to experiment by mixing different types of starter
cultures together. The
type of flour used will also support a distinctive consortium of microflora. Experiment
with rye, spelt, wheat and so on. Store
the culture in the refrigerator when not in use. Two days before use, remove the
culture from the fridge, discard most of it, then feed it a with a quarter of
cup of flour and enough water to maintain
the consistency and incubate at 25 C. After 24 hours it should be ready to use. PROBLEMS
1.
The starter loses its activity and does not make the bread rise as much as it
used to. How to regenerate the starter? If
you do not use the sourdough starter for a few days then the level of alcohol's
will rise until they eventually kill of most off the micro-organisms.
Without yeasts your bread will not rise. The
solution is to mix 1 teaspoon of starter with 1/2 of cup of flour and enough water
to make a smooth paste. Leave it for 4-5 hours or until the culture has doubled
in size then refrigerate the starter to slow down the fermentation process. The
next time you take the starter from the refrigerator it will be more active. Leave
it for 6 - 8 hours to ferment then take one teaspoon and add it to 1/2 cup of
flour plus some water, leave to ferment for 4-5 hours then feed it another 1/2
cup of flour. By feeding the starter increasingly larger quantities of flour at
regular intervals you increase the activity of the yeasts which should make your
bread rise better. |
MEASUREMENTS
1 teaspoon = 5
ml / 5 gm. 1 tablespoon = 15 ml / 15 gm. 15 tablespoons = 1 cup / 225 ml. 1
cup = 8 fluid oz / 225 ml. 1 US gallon = 3.6 litres. 1 lb = 16 oz / 454 gm. Temperature 20C = 68F.
Conversion from Fahrenheit to Celsius: °C = (°F - 32) / 1.8. Conversion from Celsius to Fahrenheit: °F = °C × 1.8 + 32
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