01 - Whisk sourdough starter with warm water in a large bowl until completely dissolved and homogeneous.
02 - Combine bread flour, sugar, salt, honey, pistachios, and freeze-dried raspberries with the sourdough mixture. Mix until a shaggy, rough dough forms.
03 - Turn dough onto a lightly floured surface and knead for 8–10 minutes until smooth, elastic, and fully developed.
04 - Transfer dough to a lightly oiled bowl, cover, and ferment at room temperature for 8–12 hours until doubled in size.
05 - Divide dough into 8 equal pieces. Roll each into a smooth ball, then poke a hole through the center and gently stretch to form bagel shape.
06 - Place shaped bagels on a parchment-lined tray, cover, and rest for 45–60 minutes until slightly puffed.
07 - Preheat oven to 425°F. Bring water, baking soda, and honey to a gentle simmer in a large pot.
08 - Drop bagels into simmering water in batches. Poach for 45 seconds per side, then remove with a slotted spoon and return to tray.
09 - Sprinkle with chopped pistachios and freeze-dried raspberry pieces while slightly damp from poaching.
10 - Bake for 20–22 minutes until deep golden brown. Cool completely on wire racks before slicing.