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1
Char red bell pepper halves skin-side-down under a hot broiler or directly over a gas flame until blackened, 8–10 minutes.
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2
Transfer to a bowl, cover with plastic wrap, and rest 10 minutes; peel away charred skin under cool running water.
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3
Toast blanched almonds in a dry skillet over medium heat, shaking frequently, 4–5 minutes until fragrant and light golden; cool slightly.
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4
Combine roasted peppers, toasted almonds, pimentón, garlic, sherry vinegar, salt, and pepper in a food processor; pulse until coarsely combined.
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5
With motor running, drizzle in olive oil slowly until sauce reaches a chunky, pourable consistency.
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6
Taste and adjust seasoning with salt, vinegar, or additional oil as needed.
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7
Transfer to a serving vessel; romesco can be served warm or at room temperature.
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8
Store in a sealed jar, refrigerated, up to 5 days; excellent with grilled vegetables, seafood, or bread.