It’s a library for mothers.

This library stores sourdough [SOW-er-doh] bread starters. Each is called a “mother.” Starter makes bread rise. No two are alike.

Karl De Smet tends this library. A baker might spoil his own supply. He can get a glob from his “mother” at the library.

READ MORE: This library is in St. Vith, Belgium. It holds 125 sourdough starters. All are kept in a refrigerator. Yeast is bacteria (teeny living things made by God). Yeast helps bread rise. Long-ago bakers began with a mixture of flour and water. That mixture captured wild yeast from the air—and from the bakers’ hands. The starter got passed down from mother to child. Yeast leavens (makes to rise) bread. Matthew 13:33 says, “The kingdom of heaven is like leaven that a woman took and hid in three measures of flour, till it all was leavened.”