01 - Whisk together sourdough starter and warm water in a large bowl until fully dissolved and uniform.
02 - Add bread flour, sugar, salt, honey, 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 tightly, and ferment at room temperature for 8–12 hours or overnight until doubled in size.
05 - Divide dough into 8 equal pieces on a flour-dusted surface. Roll each into a smooth ball, then poke a hole through the center and gently stretch to form bagel rings.
06 - Arrange shaped bagels on a parchment-lined baking 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 - Carefully drop bagels into simmering water in batches. Poach for 45 seconds per side, then remove with a slotted spoon and return to the tray.
09 - Immediately sprinkle poached bagels with chopped pistachios and freeze-dried raspberry pieces, pressing gently to adhere.
10 - Bake for 20–22 minutes until deeply golden brown. Transfer to wire racks and cool completely before slicing.