Dr. Benjamin's Rye Bread Starter - Bread Machine

This rye bread starter uses a clever old-world trick: a halved onion sits in the fermenting mixture for the first 24 hours, feeding the natural bacteria and giving the starter a head start on developing that tangy, complex sourness. After a day, the onion comes out, more flour and water go in, and 24 hours later you’ve got a bubbly, beery-smelling starter ready for baking.

Unlike a pure wild sourdough starter that can take a week or more to establish, this recipe uses commercial yeast to jumpstart fermentation. The result is reliable, sour, and active in just two days instead of seven.

Chef Tips

• Use tepid water (around 100°F / 38°C). Too hot kills the yeast; too cold slows fermentation to a crawl.
• The onion should smell a bit funky after 24 hours. That’s normal and means the bacteria are doing their job. Remove it and don’t be put off.
• After the initial 48-hour build, feed the starter weekly with ½ cup tepid water and ¾ cup rye flour. Feed it the day before you plan to bake for maximum activity.
• Keep it in the fridge between feedings. At room temperature, unfed starter turns overly acidic and eventually dies.

Variations

• Use dark rye flour for a more intensely flavored starter and darker bread.
• Add a teaspoon of caraway seeds to the starter for a traditional rye flavor that carries into your bread.
• Once established, this starter can also be used in pumpernickel or marble rye recipes.