01 - Whisk sourdough starter and warm water in a large bowl until fully dissolved and homogeneous.
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 vigorously for 8-10 minutes until smooth, elastic, and tacky but not sticky.
04 - Place dough in a lightly oiled bowl, cover with plastic wrap or damp towel, and ferment at room temperature for 8-12 hours or overnight until doubled in volume.
05 - Divide dough into 8 equal portions on a floured surface. Form each piece into a smooth ball, then poke a hole through the center and stretch gently to create the bagel ring.
06 - Arrange shaped bagels on a parchment-lined baking sheet, cover loosely, 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 Dutch oven or stockpot.
08 - Carefully lower bagels into simmering water in batches of 3-4. Poach for 45 seconds per side. Transfer back to parchment-lined tray with a slotted spoon.
09 - Immediately sprinkle poached bagels with chopped pistachios and freeze-dried raspberry pieces while surface is still tacky.
10 - Bake for 20-22 minutes until deep golden brown with a crusty exterior. Cool completely on wire racks before slicing.