Because the starter comes in a dehydrated state, your first step will be to rehydrate and activate the starter. This can be done using the following instructions:
1. Add packet of starter to 1 Tbsp. flour and 1 Tbsp. of room temperature water in a quart-size glass jar and stir thoroughly. Cover the jar with a coffee filter or breathable material secured with rubber band and culture the starter in a warm place (70-80°F) for 4-8 hours.
2. After 4-8 hours, feed the starter with an additional 2 Tbsp. of flour and 2 Tbsp. water. Stir thoroughly
3. After 4-8 hours, feed the starter with an additional 1/4 cup of flour and 1/4 cup water. Stir thoroughly
4. After 12-24 hours, feed the starter with an additional ½ cup of flour and ½ cup water. Stir thoroughly
5. Discard down to ½ cup starter and then feed the starter with ½ cup water and ½ cup flour. Stir thoroughly
6. Repeat step 5 every 4-8 hours for 3-7 days. Do this until the starter has the consistency of pancake batter and is bubbling regularly within a few hours of feeding. That’s when your starter is activated and ready to use
7. Once starter is bubbling reliably within a few hours of being fed, feed for two more cycles, then maintain fresh starter at room temperature or cover tightly and place in the refrigerator and proceed to maintenance feeding stage.