This jewel-toned beet soup with herby pistachios will brighten any wintry evening

Olga Massov

THE WASHINGTON POST – Winter soups, for all their comfort and warmth, aren’t known for their colour. My greenmarket January haul tends to be root vegetables, alliums and tubers – and perhaps a few cruciferous friends. That’s a lot of beige and brown food in my bowl, and most of the time, that’s just fine. It’s soothing. It makes me feel nourished.

Maybe it’s the short days, but predictably, every February, I start to long for a hint of colour.

Enter beets, deep red and dyeing everything they touch a saturated magenta-pink. Beets check all the boxes: They are earthy, comforting, sweet and colourful. Some say the root vegetable tastes like dirt, but I’ve never met a beet I didn’t love. Maybe it’s my Russian heritage – beets are the undisputed superstars of Russian cooking and adored in Persian, Middle Eastern and North African cuisines, as well – but I’ll eat them in any permutation: In borscht, in vinegret or herring-under-a-fur-coat (two beloved Russian dishes), julienned raw in salads or spun into a garlicky spread, zakuski-style.

In the throes of this winter, however, I craved a gentle, delicate soup. I decided to make a finely ground pistachio-herb topping to imbue a beet soup with even more colour as well as herbaceous and gutsy notes.

Toasting the pistachios in the oven with a little olive oil, turmeric and salt punched up the nuts’ flavour and colour. Once they were cool, I blitzed them with generous handfuls of dill, parsley and cilantro, adding a bit more salt along the way.

Pureed beet soup with tahini and herbed pistachios. PHOTO: THE WASHINGTON POST

Once the beets were cooked and pureed into a soup, I spooned a bit into my mouth. The result, while fragrant and delicious, felt thin – like something was missing. Adding cream didn’t feel right. I wanted to keep the soup vegan and light and continue to channel flavours of the Levant. I remembered being served a dish of roasted beets drizzled with lemony, garlicky tahini. What if I added the tahini to the soup to thicken it up? My instincts proved right: Whirred into the soup, it provided the necessary backbone, and it did something unexpected – it brightened the dark red puree, turning it a striking fluorescent pink.

Topped with colourful pistachio-herb topping and drizzled with olive oil, the soup lifted me up with its cheery pink colour and soothing flavour. And while there was richness to the soup, it didn’t feel heavy.

Though the days are still short, I’ve found a soup to be my guiding light through the rest of winter, as I impatiently wait to spy my first spring asparagus and the bright produce to follow.

PUREED BEET SOUP WITH TAHINI AND HERBED PISTACHIOS

Active: 25 minutes | Total: One hour. Four servings.

Add some colour to your winter eating with this delicious, flavourful soup. Ruby red and redolent with herbs, lemon and tahini, the soup can be adapted any number of ways. Want to swap out tahini for cream? Go for it. Craving a heartier broth as a base instead of water? Use vegetable, chicken or even beef broth instead. Not a fan of pistachios? Try walnuts, pine nuts or earthy-sweet pecans. Use whatever herbs you have on hand. In fact, the soup is an excellent way to make sure those half-used bunches of fresh herbs don’t go to waste.

Make ahead: The pistachios can be roasted and kept at room temperature in an airtight container for up to two days ahead.

Storage notes: The soup can be refrigerated in an airtight container for up to four days.

INGREDIENTS

For the soup

Six tablespoons extra-virgin olive oil, divided, plus more as needed

One medium yellow onion, peeled and chopped

Two cloves garlic, finely grated

Two tablespoons tomato paste

One large carrot, diced (One cup)

One and a half pounds beets, trimmed, scrubbed and diced

Three quarter cup chopped fresh herbs, such as flat-leaf parsley, dill and cilantro

A quarter cup fresh lemon juice (from two lemons), or more as needed

One and a half teaspoons kosher salt, or more as needed

A quarter teaspoon freshly ground black pepper, or more as needed

Seven cups water

A quarter cup tahini

For the pistachios

Half cup (two and a half ounces) raw shelled pistachios

One tablespoon extra-virgin olive oil

Half teaspoon kosher salt, plus more as needed

Half teaspoon ground turmeric

Half teaspoon crushed red pepper flakes (optional)

One and a half cups loosely packed fresh herbs, such as flat-leaf parsley, dill and cilantro

STEPS

Position the baking rack in the middle of the oven and preheat to 350 degrees.

Make the soup: In a large, heavy-bottomed pot over medium heat, heat two tablespoons of the oil until shimmering. Add the onion and cook, stirring, until softened, about five minutes. Add the garlic and cook, stirring, until fragrant, about one minute. Stir in the tomato paste and cook, stirring, for about one minute. Add the carrot, beets and herbs and stir to combine. Stir in the lemon juice and season with salt and pepper. Add the water and bring to a boil.

Reduce the heat so the soup is at a simmer, partially cover the pot and cook until the beets are soft, 30 to 40 minutes. Taste – the soup should be tart and well-seasoned – and add more salt, pepper and/or lemon juice, if desired.

Add the tahini and the remaining four tablespoons oil and, using an immersion blender, puree the soup to your desired consistency. You may want it to be completely smooth or a little chunkier.

Make the pistachios: While the soup is simmering, on a small, rimmed baking sheet, toss the pistachios with the oil, salt, turmeric and crushed red pepper flakes, if using, until combined and toast, eight to 10 minutes, until fragrant. Transfer the baking sheet to a wire rack and let cool completely. The nuts can be prepared to this point for up to two days ahead.

Place the nuts in the bowl of a food processor and pulse a few times until coarsely chopped. Gradually, add the herbs and pulse until the mixture is finely chopped.

Ladle the soup into bowls. Generously garnish with the herbed pistachios, drizzle with more olive oil and serve.