
That deep, glossy drizzle you get at a sushi restaurant is surprisingly simple to recreate at home, and this sauce delivers every bit of that sweet-savory magic. Tamari stands in for regular soy sauce here, making the whole recipe gluten free without sacrificing any of the rich umami depth you're after. Mirin and sake bring a subtle complexity, while the sugar caramelizes gently during the simmer to build that signature lacquered finish. The key is patience β letting the sauce reduce slowly until it just coats the back of a spoon is what separates a thin, watery result from something truly restaurant-worthy. Because every ingredient in this recipe is naturally free of nightshades, you don't have to second-guess a single label or swap a single thing. It keeps beautifully in a jar, so you can drizzle it over grilled fish, rice bowls, or roasted vegetables all week long.
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Combine the tamari, mirin, sake, and sugar in a small saucepan. Whisk over medium heat until the sugar is fully dissolved, about 1β2 minutes.
Bring the mixture to a gentle boil, then reduce the heat to medium-low. Simmer uncovered, stirring occasionally, until the sauce has reduced by about one-third and coats the back of a spoon with a thin, glossy layer, 10β12 minutes. Watch closely toward the end β the sugar can scorch quickly.
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