01 - Whisk active sourdough starter with warm water in a large mixing bowl until fully dissolved and homogeneous.
02 - Add bread flour, granulated sugar, and salt to the starter mixture. Pour in honey and incorporate chopped pistachios with freeze-dried raspberries. Mix until shaggy dough forms.
03 - Turn dough onto lightly floured surface and knead for 8–10 minutes, developing gluten until smooth and elastic with tacky texture.
04 - Place dough in 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 - Turn fermented dough onto floured surface, divide into 8 equal portions, and shape each into smooth ball. Poke thumb through center of each ball and gently stretch to form bagel ring with 2-inch opening.
06 - Arrange shaped bagels on parchment-lined baking sheet, cover loosely, and rest at room temperature for 45–60 minutes until slightly puffed and expanded.
07 - Preheat oven to 425°F. Bring poaching liquid (water, baking soda, and honey) to gentle simmer in large pot—bubbles should barely break surface.
08 - Carefully lower bagels into simmering water in batches, avoiding overcrowding. Poach for 45 seconds per side, then remove with slotted spoon, allowing excess liquid to drain before returning to baking sheet.
09 - Immediately sprinkle wet bagel surfaces with chopped pistachios and freeze-dried raspberry pieces, pressing gently to adhere.
10 - Bake for 20–22 minutes until deep golden brown with glossy crust. Transfer to wire rack and cool completely before slicing or serving.