Friday, November 12, 2010
black bean soup with sweet potatoes
Since Meredith started understanding what Halloween was all about, we’ve done a little trick-or-treating in our neighborhood. Unfortunately for her, the houses in our neighborhood are relatively few and far between. Luckily, Meredith has never trick-or-treated in a more densely populated area, so she just takes it for granted that she has to walk quite a distance for her meager quota of candy. Not that we have ever visited very many houses—she usually poops out and gets cold after five or six stops.
But this year was different. First off, our neighborhood has really come together this year because now that we have kindergartners, we parents have been spending a lot of time together at the bus stop. So several of our families decided to go trick-or-treating together! A pack of our little hoodlums would be roaming the streets together, with a rearguard of parents (dads drinking beers, moms chatting. Second, Meredith has been walking to and from the bus stop every day (it’s only uphill one way, but still, it’s almost a mile), and her walking muscles are stronger than ever. So with other kids to draw her along, plus greater endurance, we went to many more houses than before.
You might think that we collected quite a pile of Halloween candy, but it didn’t really work out that way. Despite visiting twenty houses or so (which seemed like a lot in the cold and icy road conditions), we caught a lot of folks off-guard. I don’t blame them—they kept saying “We’ve NEVER had any trick-or-treaters! I’m so sorry, I don’t have anything!” Sometimes they would give us something creative; Meredith collected a large and heavy bottle of juice and a homemade oatmeal cookie. But some just didn’t have anything to hand out. At every house that came up empty, I would explain to the homeowner “Well, you DO get to choose—a trick or a treat. We’ll come back later with the toilet paper.” They would look at me for a second, wondering whether I was serious… “Just kidding!” I would say. “But consider yourself warned for next year!” They promised to be ready for us next year!
If this isn’t a Halloweeny soup, I don’t know what is. I spotted it in an email from FineCooking.com, and I made my version ahead of time to eat after trick-or-treating on Halloween night. But don’t wait for next October to make it! It’s really good—perfect for any chilly night.
black bean soup with sweet potatoes
I made this soup based on recipe by Lori Longbotham, in an email from Fine Cooking. But instead of just cooking the sweet potatoes in the soup, as she recommends, I roasted slices of sweet potatoes and added them as a garnish at the end. Also I used home-cooked black beans instead of canned ones, so I didn’t have to use stock, as her recipe called for. But you could substitute canned beans and stock if you like, instead of cooking your own beans and using the bean cooking liquid.
As Ms. Longbotham pointed out in her recipe, “The sweet potatoes in this soup contrast nicely with the tang of the yogurt and the tartness of the lime. Aniseed lends an unusual hint of licorice flavor.”
If you have time, cook the beans and make the soup ahead of time, like the day before, and then roast the sweet potatoes just before dinner. Or you can roast the sweet potatoes ahead, too, and just reheat everything when you’re ready to eat. This soup freezes wonderfully, too.
Oh, and one more thing—about the sweet potatoes. First, let’s make sure we’re talking about the right vegetable. Sweet potatoes like the ones I’ve used in this recipe are usually called yams in the grocery store—for example, garnet yams. Use the really orange ones.
4 cups black beans, soaked for 4 hours or overnight
1 onion, peeled and quartered
4 garlic cloves, peeled but left whole
kosher salt or sea salt
Drain the soaked beans, rinse them, and then put them in a large pot and cover with cold water by a couple of inches. Add the quartered onion and garlic and make sure the water covers the onions. Bring to a boil, then lower the heat and simmer, partially covered, until the beans are tender. This could take 45 minutes to 1 ½ hours, depending on the size of the beans and how old they are. When the beans are tender enough to easily squish between your tongue and the roof of your mouth, turn the heat off. If you have time, let the beans sit in their liquid with the aromatics until cool. Remove the quartered onions and whole garlic and discard. Add salt to the beans to taste.
1 to 2 tablespoons olive oil
2 yellow onions, chopped
6 medium cloves garlic, minced
1 tablespoon ground coriander
2 teaspoons ground cumin
¼ teaspoon aniseed
Freshly-ground black pepper
kosher salt or sea salt
Warm the olive oil in a large, heavy soup pot. Add the onion and cook over medium heat until the onion is soft and golden brown, 8 to 12 minutes. Add the garlic, coriander, cumin, aniseed, and ¼ teaspoon pepper and cook, stirring constantly, until fragrant, about 30 seconds. Add the beans and broth and bring to a boil over high heat. Reduce the heat and simmer, uncovered, stirring occasionally, for 15 or 20 minutes. Taste the soup and add salt I f needed, stir well, and set aside until an hour and a half before dinnertime.
While you’re roasting the sweet potatoes, and/or when the soup is cool enough to handle without burning yourself, using a slotted spoon, set aside 2 or 3 cups of the beans and onions. Puree the remaining soup in batches in a blender. Return the solids to the soup, and when you’re ready to eat, reheat over gentle heat, stirring often (Don’t burn the beans!) and season to taste with salt, pepper and a little lime juice.
The Sweet Potatoes
4 medium sweet potatoes (called yams at the grocery store—get Garnet Yams, or something similar), peeled and sliced into ¾-inch thick rounds
2 tablespoons olive oil
1 teaspoon sea salt or kosher salt
My method for roasting these is from Cook’s Illustrated. The reason for all the shenanigans with the foil at the beginning is that starting the sweet potatoes in a cold oven keeps the temperature lower at first, to allow more of the starches in the sweet potatoes to convert to sugars. Then the 425-degree final temperature browns and caramelizes them. If you prefer not to peel the potatoes, just scrub them well before cutting.
1. Toss sweet potatoes in large bowl with oil and salt until evenly coated. Grease one or two large rimmed baking sheets with olive oil or cooking spray.
2. Arrange sweet potatoes in single layer on baking sheet(s) and cover tightly with aluminum foil. Adjust oven rack to middle position and place yams in COLD OVEN. Turn oven on to 425 degrees and cook sweet potatoes 20 to 30 minutes, until they are starting to get tender.
3. Carefully remove foil, and return sweet potatoes to oven and cook until bottom edges of yams are golden brown, 15 to 25 minutes. If they are very tender and brown, they are already done! (Whether they are done or not will depend on how fast your oven heats up.) If not tender yet, go to Step 4.
4. Use a spatula to flip slices over. Continue to roast until bottom edges of sweet potatoes are golden brown, and they are quite soft in the center, 10 to 20 minutes longer.
5. Remove from oven; let them cool for a bit, and then cut some of them into small pieces to sprinkle on top of your soup.
The Other Garnishes
½ cup plain yogurt, salted to your taste (optional—I actually liked it better without the yogurt)
fresh lime juice, or wedges or slices of lime
Serve each bowl of soup topped with sweet potato cubes and, if desired, a dollop of yogurt, and a squeeze more lime juice if it needs it.