INGREDIENTS
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4 pounds plum tomatoes, halved, seeded, divided
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 1/4 cup olive oil
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1 large onion, chopped
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1 large leek, white and pale-green parts only, halved lengthwise, thinly sliced
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3 garlic cloves, crushed
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2 bay leaves
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2 teaspoons coriander seeds
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2 teaspoons finely grated fresh horseradish or prepared horseradish
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1Â 1/2 cups low-sodium chicken broth
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5 tablespoons unsalted butter, room temperature
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Kosher salt and freshly ground black pepper
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Thinly sliced basil leaves (for serving)
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 1/2 cup hickory, pecan, or applewood chips