I make a lot of soups and stews for the family, especially from September through May. I know many of you have been freezing your buns off on the East Coast and Midwest lately and are likely craving a bowl of steamy, thick, rich soup to warm your body and soul. I love all types of soups from brothy to substantial and hearty, but I always try to keep them nutritious and clean. Fortunately, I have learned a few tricks for making soups and stews richer or creamier without using the old-fashioned techniques of a roux, heavy cream, flour or cornstarch. Actually, my mom taught me to thicken my stews by mashing softened butter with equal parts all-purpose flour and stir that in the pot towards the end of cooking which works just fine, but these days many people are dairy and/or gluten-intolerant or looking to save a few calories wherever possible without sacrificing flavor and nutrition. Why add unnecessary fat, non-nutritive calories, and/or hard-to-digest ingredients if you can achieve the same result more naturally?
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Here are my favorite tricks for thickening soups and stews:
pureeing cooked vegetables and stock — this is the method I use most often. I like to take a cup of vegetables and stock (leave any pieces of animal protein in the pot) from the cooked soup and blend them in a blender or mini food processor and then add it back to the pot.
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white beans — cooked Cannellini or Great Northern beans have a bland, neutral flavor and fantastic creaminess when they are pureed. Take a can of beans with a cup of hot stock from the soup and blend together until smooth, then add back to pot. Or cook beans with soup and puree the entire soup, beans included. Beans add great fiber and protein, as well! I love this recipe for Potato and White Bean Soup and this post for how to cook your beans from scratch. Otherwise, Eden is my favorite BPA-free, organic brand.
Yukon Gold potatoes — potatoes add a lovely richness and neutral flavor to soups, especially if you can puree some or all of them. Use same technique above, either cook potatoes separately, puree with hot stock and add to the soup or cook potatoes with the soup and puree in the pot. The Yukon Gold variety has a nice buttery flavor and you get the benefits of a whole food. Check out Potato and White Bean Soup, as well as Cauliflower and Roasted Garlic Soup.
rolled oats — sounds weird, I know. But if you plan on a pureed soup, you won’t detect any oatmeal. The rolled oats not only thicken the soup and add great fiber, but add an amazing silkiness. I use rolled oats in my Puree of Asparagus Soup which I can post this Spring. Several manufacturers sell gluten-free rolled oats, such as Bob’s Red Mill
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coconut milk instead of cream — okay, you won’t be saving many calories using coconut milk, but I am a huge fan of unrefined coconut products and their myriad health benefits. And generally speaking unrefined coconut products are easier to digest than pasteurized cow dairy. I love coconut milk in my Sweet Potato Soup, Chicken Tikka Masala, Thai Coconut Chicken Soup (to be posted soon!), as well as any soups with winter squash. It’s so smooth and rich with a subtle sweetness and it won’t make your soup taste like a piña colada — promise! My favorite brand is Native Forest which supposedly doesn’t contain BPA in their can liners.
ground nuts, like almonds or cashews — I’ve seen this in some Spanish or North African soups. The nuts add some high quality protein, as well. I use cashew butter or ground cashews in my Chicken and Vegetable Curry.
immersion blender — sure you can puree with a standard blender, but you have to do it in batches and veeerrrry carefully so that you don’t create a heat explosion. Then you need to pour the puree into another container and puree what’s left in the pot. Too much work for me and I don’t love the extra dishwashing involved. Stick an immersion blender directly in the pot and puree as much or as little as you like. Rinse the immersion blender in the sink and put it away. I have the Breville immersion blender which I love, but some of my students bought the Cusinart which they think is great.
What are your tried and true methods of thickening soups?
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