
Thickening a sauce or soup without reaching for cornstarch or a roux is easier than most people think, and this two-ingredient slurry proves it. Arrowroot starch whisked with cold water creates a silky, neutral-tasting thickener that works beautifully in everything from pan sauces to broths without adding any sweetness or unwanted flavor. That matters a lot when you're cooking without added sugar, since so many store-bought thickeners and sauce mixes sneak in sweeteners you'd never expect. The technique is straightforward β stir the slurry into a gently simmering liquid and watch it turn glossy and smooth in under a minute. The one thing to keep in mind is timing: arrowroot is sensitive to high heat, so pulling the pan off the burner promptly keeps the texture perfect. Once you have this method down, it becomes an effortless go-to for finishing any dish that needs a little body without any compromise on ingredients.
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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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