Master light, chewy sourdough crumpets with The Starter Jar's proven recipe. Get step-by-step instructions, expert tips, and troubleshooting for perfect porosity. — Published July 19, 2026 at 6:02 AM UTC.
In a large bowl, whisk together the active sourdough starter, warm milk, and sugar (if using) until well combined.
Gradually add the all-purpose flour and salt to the wet mixture, mixing with a wooden spoon or spatula until just combined. Do not overmix; a few lumps are fine.
Cover the bowl with plastic wrap or a damp tea towel and let it ferment at room temperature (around 70-75°F / 21-24°C) for 8-12 hours, or overnight. The mixture should be bubbly and slightly increased in volume.
In the morning, or after the bulk ferment, dissolve the baking soda in 1 tablespoon of warm water. Pour this mixture into the fermented crumpet batter and stir gently until fully incorporated. The batter will become very airy and bubbly.
Heat a lightly oiled griddle or non-stick frying pan over medium-low heat. Place greased crumpet rings (about 3.5 inches / 9 cm diameter) onto the hot griddle.
Pour approximately 1/4 cup of batter into each crumpet ring, filling it about two-thirds full. Cook for 5-7 minutes, or until the top is covered in bubbles that pop and the edges are set.
Carefully remove the crumpet rings (they should slide off easily) and flip the crumpets. Cook for another 2-3 minutes on the second side until golden brown and cooked through.
Transfer the cooked crumpets to a wire rack to cool slightly, or serve immediately with butter, jam, or your favorite toppings.