INGREDIENTS
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4 tbsp. extra-virgin olive oil
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2 red onions, thinly sliced
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4 stalks celery, finely chopped
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kosher salt
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Black pepper
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2 tbsp. red wine vinegar
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10 c. cubed everything bagels (about 6 large bagels), dried overnight
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1/4 c. chopped chives, plus more for serving
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1 tbsp. chopped fresh sage
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2 large eggs
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1/2 c. sour cream
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3 c. low-sodium vegetable broth
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4 tbsp. unsalted butter, cut into 1/2" pieces
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1/2 c. vegetable oil
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5 garlic cloves, thinly sliced
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1 large shallot, thinly sliced
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2 tsp. poppy seeds
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2 tsp. Toasted sesame seeds