Ingredients

  • 4 1/2 to 5 pounds Chinese or Japanese eggplant
  • 5 tablespoons olive oil, plus more as needed
  • Coarse sea salt
  • 1/2 teaspoon whole coriander seeds
  • 1/2 teaspoon whole cumin seeds
  • About 4 cups (1 quart) low-sodium vegetable broth
  • 1/4 teaspoon red pepper flakes
  • Ice
  • 5 tablespoons freshly squeezed lemon juice (from about 2 medium lemons), plus more as needed
  • 1 1/2 teaspoons sherry vinegar, plus more as needed
  • Freshly ground black pepper
  • 4 ounces fresh Romano beans
  • 2 ounces Padron peppers
  • 1/8 preserved lemon
  • 1 medium zucchini, trimmed, halved lengthwise, then cut crosswise into 1/4-inch-thick slices
  • 1 cup cherry tomatoes, large dice
  • 1/3 cup tightly packed purslane leaves
  • 1/4 cup loosely packed purple basil leaves
  • Edible flowers, for garnish

Method

  • Heat the oven to broil and arrange a rack in the middle.
  • Place the eggplants in a large roasting pan, drizzle with 2 tablespoons of the measured olive oil, and season with salt.
  • Broil, turning occasionally, until the skin of the eggplants has charred and the flesh has softened until it collapses, about 20 to 30 minutes.
  • Remove the pan to a wire rack and let cool.
  • Meanwhile, place the coriander and cumin seeds in a small frying pan over medium heat and toast, shaking the pan occasionally, until fragrant, about 3 minutes.
  • Remove the pan from heat and let cool.
  • Transfer the spices to a spice grinder or mortar and pestle and grind coarsely; set aside.
  • When the eggplants are cool enough to handle, halve them lengthwise.
  • Scoop out the flesh with a large spoon and place in a large saucepan with a tightfitting lid.
  • (Discard the stems and skin.)
  • Add enough vegetable broth to the saucepan to just cover the eggplant flesh.
  • Add the ground spices and red pepper flakes and stir to combine.
  • Place the saucepan over medium-high heat and bring to a boil.
  • Reduce the heat to low, cover, and simmer until the flavors meld and the eggplant is completely falling apart, about 25 to 30 minutes.
  • When the soup is ready, prepare an ice water bath by filling a large bowl halfway with ice and water.
  • Transfer the soup to a second large bowl.
  • Set the bowl with the soup in it over the ice water bath and let cool to room temperature.
  • Cover the soup and chill in the refrigerator until completely cold.
  • When the soup is cold, puree it in a blender in batches until smooth.
  • Pour the blended soup into a large bowl.
  • Add 3 tablespoons of the lemon juice, the sherry vinegar, and 2 tablespoons of the remaining olive oil and whisk to combine.
  • Taste and season with salt, pepper, and additional olive oil, lemon juice, and vinegar as needed.
  • Return to the refrigerator until ready to serve.
  • Bring a medium saucepan of heavily salted water to a boil over high heat.
  • Add the Romano beans and blanch until crisp-tender, about 3 to 5 minutes.
  • Drain in a colander and set aside to cool.
  • When cool enough to handle, cut the beans crosswise on the diagonal into 1/2-inch pieces and place in a large bowl.
  • Heat a cast iron skillet over high heat until smoking, about 10 minutes.
  • Meanwhile, place the Padron peppers in a medium bowl, drizzle with olive oil, season with salt, and toss to combine.
  • When the skillet is hot, add the peppers and cook, turning occasionally, until they start to char and blister, about 6 to 8 minutes total.
  • Transfer to a cutting board.
  • When cool enough to handle, trim the stems, coarsely chop the peppers, and add to the bowl with the beans.
  • Trim the flesh and white pith of the preserved lemon and discard.
  • Finely chop the remaining rind and add it to the bowl with the beans and peppers.
  • Add the zucchini, tomatoes, and purslane.
  • Tear the purple basil into bite-size pieces, add it to the bowl, and toss gently to combine.
  • Drizzle with the remaining 2 tablespoons lemon juice and the remaining 1 tablespoon olive oil, season with salt and pepper, and toss to coat.
  • Taste and season with additional salt, pepper, lemon juice, and olive oil as needed.
  • To serve, ladle the soup into wide, shallow serving bowls.
  • Divide the vegetable mixture over the soup and top with edible flowers and a drizzle of olive oil.