
Thickening a sauce or soup sounds simple until you realize how many common starches can trigger reactions for people managing pollen-food sensitivities. Cornstarch, for instance, is a frequent offender, and wheat-based thickeners are obviously off the table for a lot of folks. Arrowroot starch steps in as a clean, neutral alternative that works beautifully without bringing any of those concerns along for the ride. Just two ingredients β arrowroot and cold water β come together in seconds to create a silky slurry that transforms a thin broth or pan sauce into something glossy and restaurant-worthy. The key is adding it to a gentle simmer and pulling the pot off the heat quickly, since arrowroot is a little more delicate than other starches and loses its magic if it gets too hot for too long. Once you nail the technique, you'll find yourself reaching for this method every time a recipe calls for a thickener. It's a small kitchen trick that quietly opens up a lot of cooking possibilities.
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Combine the arrowroot starch and cold water in a small bowl and whisk or stir with a fork until completely smooth with no lumps remaining.
Bring the liquid you want to thicken (sauce, soup, or broth) to a gentle simmer in a saucepan over medium heat.
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