01 - Combine sourdough starter and warm water in a large bowl, stirring until completely dissolved and uniform.
02 - Add bread flour, sugar, salt, honey, chopped pistachios, and freeze-dried raspberries to the starter mixture. Stir until a shaggy, rough dough forms.
03 - Turn dough onto a lightly floured surface and knead for 8–10 minutes until smooth, elastic, and ingredients are evenly distributed.
04 - Place dough in a lightly oiled bowl, cover, and ferment at room temperature for 8–12 hours or overnight until doubled in size.
05 - Turn fermented dough onto a flour-dusted surface and divide into 8 equal portions. Shape each portion into a smooth ball.
06 - Poke a hole through the center of each dough ball and gently stretch to form the classic bagel ring shape. Place on parchment-lined tray, cover, and rest for 45–60 minutes until slightly puffed.
07 - Preheat oven to 425°F. Bring poaching liquid to a gentle simmer in a large pot.
08 - Gently drop bagels into simmering water, working in batches. Poach for 45 seconds per side. Remove with slotted spoon and return to baking tray.
09 - Sprinkle wet bagels generously with chopped pistachios and freeze-dried raspberry pieces, pressing gently to adhere.
10 - Bake for 20–22 minutes until deep golden brown and crust is set. Transfer to wire rack and cool completely before slicing.