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1
Preheat the oven to 400 degrees.
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2
Lay tomatoes, cut side up, and garlic cloves in a medium roasting pan.
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3
Sprinkle with olive oil and season with salt.
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4
Roast for 15 minutes and then reduce the heat to 350 degrees.
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5
Roast another 60 to 75 minutes.
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6
(The garlic should be soft after 20 minutes; remove it and let cool.)
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7
Meanwhile, coat a small saute pan with 1/8-inch olive oil.
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8
Place over medium heat.
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9
When the oil shimmers, add the almonds and hazelnuts and cook until toasted a golden brown, about 2 minutes.
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10
Remove and cool on paper towels.
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11
Remove the seeds from the ancho chili and discard.
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12
Scrape the thin layer of flesh from the skin.
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13
Place this pulp, along with the tomatoes, nuts and piquillo peppers, in the bowl of a food processor.
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14
Squeeze the garlic from its skin and add it.
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15
Pulse a few times to blend it and then, leaving the processor on, pour olive oil through the feed tube in a thin stream.
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16
The sauce should become thick and creamy, like a mayonnaise.
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17
About 1 cup of oil should be enough.
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18
To sharpen it, season with salt and add a tablespoon or two of vinegar and red wine.
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19
Serve with grilled scallions.
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20
(Brush with olive oil, season with salt and grill until charred and soft or roast in a 350-degree oven; peel to tender part, then serve.
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21
).