01 -
In a large mixing bowl, stir together sourdough starter, warm water, and sugar until the sugar is fully dissolved.
02 -
Add flour, cocoa powder, and salt to the liquid mixture, stirring with a wooden spoon or hands until a sticky dough forms.
03 -
Turn the dough onto a floured surface and knead for approximately 10 minutes until smooth and elastic.
04 -
Place the dough in a lightly greased bowl, cover with a clean towel, and let it rise in a warm place for about 2 hours, until doubled in size.
05 -
Preheat the oven to 190°C and line a baking sheet with parchment paper.
06 -
Punch down the risen dough and gently shape into heart forms. Arrange on the prepared baking sheet.
07 -
Evenly sprinkle chocolate chips over the hearts, pressing lightly to adhere.
08 -
Bake in the preheated oven for 20 to 25 minutes until the hearts are firm and lightly puffed. Remove and cool completely before serving.