
Crema — a Mexican cultured heavy cream similar to sour cream — is often drizzled over enchiladas and tostadas and added to side dishes and sauces. Here it lends a tangy balance to rich avocado and sweet corn.
•Soup can be chilled up to 1 day.
•Cilantro oil can be made 3 hours ahead and chilled, covered.
Recipe information
Total Time
2 1/2 hr
Yield
Makes 6 servings
Ingredients
For soup
For cilantro oil
Special Equipment
Preparation
Make soup:
Step 1
Roast corn on rack of gas burner over high heat, turning occasionally with tongs, until kernels are charred in spots, 4 to 5 minutes. (Alternatively, heat a dry well-seasoned cast-iron skillet and roast corn over moderately high heat, turning occasionally, about 10 minutes.) Transfer corn to a cutting board and, when cool enough to handle, cut kernels from cob with a sharp knife, then cut cob into thirds.
Step 2
Bring kernels, cob pieces, 4 cups water, garlic, salt, and 1/2 cup onion to a boil in a 3-quart saucepan and boil until liquid is reduced to about 3 cups, about 20 minutes. Remove from heat and cool, uncovered. Discard cob pieces.
Step 3
Purée corn mixture along with chile and remaining 3/4 cup onion in a blender, then pour through a fine-mesh sieve into a bowl, pressing hard on and then discarding solids. Return broth to cleaned blender.
Step 4
Quarter, pit, and peel 1 avocado, then add to blender with 2 tablespoons lime juice and purée until smooth. Transfer soup to a bowl and cover surface with plastic wrap. Cover bowl with plastic wrap and chill soup at least 1 hour.
Prepare cilantro oil while soup chills:
Step 5
Purée cilantro, oil, and salt in cleaned blender, scraping down sides of blender several times. Pour oil into cleaned fine-mesh sieve set over a bowl and let drain 15 minutes (do not press on solids). Discard solids.
Assemble soup:
Step 6
Halve and pit remaining avocado and scoop small balls from flesh with melon-ball cutter, then toss gently with remaining tablespoon lime juice in a bowl.
Step 7
Whisk together crema and remaining 2 tablespoons water in a small bowl until smooth.
Step 8
Season soup with salt and ladle into 6 shallow soup bowls. Divide avocado balls among bowls, then drizzle with crema and cilantro oil.