Cauliflower and Apple Soup with Olive Oil-Fried Bread
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Cauliflower eluded my kitchen for far too long. I discovered it only about a year ago, in roasted form at high heat tossed with nothing but olive oil and kosher salt, a method which produces perfectly charred salty florets, addictive bites that lead me to eat heads of cauliflower in single sittings.
Today, while those crispy bits have lost none of their allure, I find myself most enjoying cauliflower in the form of a velvety smooth puréed soup. This recipe calls for simmering cauliflower in milk with an apple and a few strands of pasta, the milk and apple included to temper the cauliflower’s intensity, the pasta to provide just enough starch to ensure a creamy texture when the mixture is puréed. Interesting, right? Once again, I have Sally Schneider to thank for this recipe, which really is more of a method than anything, one that could be applied to a countless number of vegetables — turnips, carrots, rutabaga, celery root, to name a few.
This recipe begins as a purée — the cauliflower and apple are strained from the cooking liquid and blended until smooth — which is delicious on its own and would be a nice accompaniment to duck or roast chicken or any meat really. To make the soup, the reserved cooking liquid is simply whisked into the purée, heated, and garnished. Both the purée and the soup are silky smooth in texture, and for containing just a few teaspoons of butter, taste incredibly creamy.
While this recipe does call for milk, apparently, I am learning, the milk is optional. After reading Food52’s post about Paul Bertolli’s cauliflower soup, made with nothing but a head of cauliflower, an onion and water, I questioned the necessity of milk. My friend Darcy, too, confirmed that a creamy texture can indeed be achieved with no cream at all. But I couldn’t resist. I almost felt guilty pouring that quart of milk into the pot, PB’s recipe flashing into my mind, but I rationalized that a little 1% milk never hurt anybody and that I likely could use the calcium. That said, next up on my to-make list is PB’s soup, and for those of you looking for a vegan option for creamy cauliflower soup, know that it’s out there.
For fun, I topped the soup with some olive oil-fried bread cubes, one of Schneider’s many suggested garnishes. I took her up on another as well: a light drizzling of truffle oil. I know the economy is in the dumps, so please don’t feel this ingredient is a must, but if you happen to have a bottle on hand, perhaps on lockdown for a special occasion, maybe consider breaking it out. There’s never been a better time to open it.
For the Purée:
- 1 medium cauliflower (1.75 lbs – 2 lbs) (Mine actually was only 1.25 lbs and it worked just fine)
- 1 small apple, peeled, cored and chopped
- 1 quart 2% or whole milk (I used 1%)
- 1/2 oz. angel hair pasta (about 40 strands), broken into 2-inch pieces*
- 1 1/4 teaspoons kosher salt
- pinch of sugar
- 2 teaspoons unsalted butter
- 1 tablespoon crème fraîche or heavy cream (optional — I forgot to add this)
- freshly ground white pepper (I never have white pepper on hand, and black pepper works just fine, though I didn’t add any pepper at all)
* I used spaghetti, not angel hair. Schneider notes that any other dry eggless pasta, broken into pieces if necessary, will work.
Make the purée:
- Cut the cauliflower into florets and roughly chop. You should have 7 to 8 cups. (I didn’t measure and I didn’t even chop up the florets.)
- Transfer the cauliflower to a medium saucepan and add the apple and milk. Bring to a gentle boil over medium heat and stir in the pasta, 1 teaspoon kosher salt and the sugar. Cook, stirring occasionally, until the cauliflower is purée-tender, about 20 to 25 minutes.
- Strain the mixture reserving the cooking liquid. Transfer the solids to a food processor or blender and purée until smooth, at least one minute, adding a tablespoon or two of the reserved cooking liquid if necessary. (Alternatively, return the solids to the pan and purée them with an immersion blender.) Let the motor run for a minute or two, scraping down the sides several times until you have a fine purée. Add the butter and crème fraîche and season with a bit more salt if necessary, white pepper (optional) and another pinch of sugar (optional). Save the remaining cooking liquid for the soup (recipe below).
Note: You can prepare the purée several hours ahead of time and reheat it (or keep it warm for a shorter time), stirring occasionally, in a double boiler.
Schneider’s Notes: This soup lends itself to an endless number of garnishes such as crisp slivered or finely diced pancetta; diced olive oil-fried bread; a dusting of fennel pollen; crispy shallots; snipped fresh chives, chervil or flat-leafed parsley; a drizzle of roasted hazelnut oil. White truffle oil, used sparingly, adds an astonishing flavor note.
- 1 recipe cauliflower and apple purée (see above)
- Place cauliflower and apple purée in a medium saucepan, whisk in an equal amount of the reserved cooking liquid or chicken broth (Note: I made the soup one day with chicken stock and another with the reserved cooking liquid. Both ways are good, but I prefer the reserved cooking liquid.), and stir in a little cream. Bring to a simmer over moderate heat and adjust the seasoning. Add any of the garnishes mentioned above to each serving.