
Rich, slow-cooked onions are the backbone of a truly great gravy, and this version lets them do all the heavy lifting. The onions spend a solid half hour in the pan, transforming into something deeply golden, jammy, and almost sweet — that patience is what gives the sauce its incredible depth without needing any flour or grain-based thickener. Arrowroot starch steps in to create a silky, glossy consistency that coats everything beautifully, making this a smart choice when rice flour or wheat-based roux are off the table. Bone broth brings body and savory richness, while coconut aminos add a subtle umami note that rounds out the whole thing. A pinch of turmeric and ginger give it a gentle warmth that feels a little unexpected in a gravy but absolutely works. A final splash of apple cider vinegar at the end brightens all those deep, caramelized flavors and keeps the sauce from feeling heavy. Pour it over roasted vegetables, mashed potatoes, or a thick slice of meat and it will instantly become a staple in your kitchen.
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Melt the coconut oil in a large skillet over medium heat until shimmering. Add the sliced onions and salt, spreading them into an even layer.
Cook the onions, stirring every 3–4 minutes, for 30–35 minutes until deeply golden, jammy, and reduced to about one-quarter of their original volume. Lower the heat to medium-low if they begin to brown too quickly at the edges.
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