Sourdough starters come in many varieties. It is generally recommended to make a starter with the same flour you plan to use for the bread. For example, if you are making rye bread, use a sourdough starter made with rye flour. Gluten is a substance formed when a protein found in grains such as wheat combines with water. As gluten-free eating has become more common, the use of gluten-free flour has increased, creating a need for gluten-free sourdough starter.
Which flours are used for gluten-free sourdough starter?
Rice flour can be used to make gluten-free sourdough starter, as can a mixture made with starch and baking powder. Ready-made gluten-free flour blends sold in stores are also suitable; buying them from a retailer you trust to sell organic products is recommended.
You can adjust the flour ratio to your preference, but it is important to keep the same ratio each day when feeding the starter. Changing the ratios inconsistently can slow its development.
How do you start gluten-free sourdough starter?
Mix 100 g of flour with 100 g of water in a glass jar. Cover the jar with a cloth; the important thing is not to seal the mixture completely, so air can reach it. The starter begins to develop only when it is exposed to air.
Leave the mixture this way for 1 day in a room at about 24 °C / 75 °F. Small bubbles may begin to appear during this first resting period.
How do you feed and mature the starter?
At the end of 1 day, discard half of the mixture. Add 100 g each of flour and water to the remainder and stir, then cover it again. Repeat this feeding process every day for 1 week.
After about 10 days, the starter will rise and become sour. Faster rising and a pleasantly sour smell are signs that it is ready to use.
Common mistakes with gluten-free starter
Because gluten-free flours do not form as strong a structure as wheat flour, the starter may develop more slowly. This is normal; continue feeding it patiently. Avoid sealing the jar tightly, since cutting off airflow may stop the starter from developing.
If the starter remains weak and does not reach the desired consistency, you do not need to start over; continue feeding it with 100 g of flour and 100 g of water. The starter develops more slowly in a cold environment and faster in a warm one, so the warmest spot in the kitchen is ideal.
How do you bake bread with gluten-free sourdough starter?
Knead the mature starter with a gluten-free flour blend, water, and salt to make bread dough. Without gluten, the dough will not stretch as flexibly as wheat-flour dough, so keep the kneading time short; overkneading can make it fall apart.
The rise is also completed sooner than with gluten-containing bread; letting the dough rise too long can make the gluten-free structure collapse. Baking it in a pan helps keep the gluten-free dough from spreading and gives it a neat shape.
What can the starter’s smell tell you?
A healthy sourdough starter smells tangy, slightly alcoholic, and yeasty; the smell becomes more pronounced as the starter is refreshed. A pale liquid called hooch may collect on top; this is normal. You can pour it off and continue the feeding routine.
A foul, rotten, or acetone-like smell usually indicates that the starter needs feeding; increasing the feeding frequency should bring the smell back to normal within a few days. If pink, orange, or black spots appear on the surface, discard the starter safely; these colors indicate unwanted mold.