01 - Dissolve active sourdough starter in warm water within a large mixing bowl, stirring until thoroughly incorporated.
02 - Add bread flour, granulated sugar, salt, honey, chopped pistachios, and freeze-dried raspberries to the starter mixture. Mix until a shaggy, rough dough forms.
03 - Turn dough onto a lightly floured work surface. Knead firmly for 8 to 10 minutes until smooth, elastic, and fully developed.
04 - Place dough in a lightly oiled bowl. Cover and ferment at room temperature for 8 to 12 hours or overnight until doubled in volume.
05 - Turn fermented dough onto a floured surface. Divide into 8 equal portions. Shape each piece into a smooth ball.
06 - Press a hole through the center of each dough ball. Gently stretch and widen the opening to create a traditional bagel shape. Place on parchment-lined tray, cover, and rest for 45 to 60 minutes until slightly puffed.
07 - Preheat oven to 425°F. Bring poaching liquid to a gentle simmer in a large pot.
08 - Carefully lower bagels into simmering water in small batches. Poach for 45 seconds per side. Remove with a slotted spoon and return to prepared tray.
09 - Sprinkle poached bagels with additional chopped pistachios and freeze-dried raspberry pieces while still wet.
10 - Bake for 20 to 22 minutes until deeply golden brown and crust is set. Transfer to wire rack and cool completely before slicing.