Can I use frozen blueberries?
Yes. Use them straight from frozen. Expect an extra minute or two of cook time, and the sauce may release a bit more liquid at first. Just simmer until glossy and thick.
How spicy is it?
With the amounts below, it is a gentle, noticeable warmth, not a five-alarm situation. For mild, reduce the red pepper flakes. For spicy, add a pinch more or use a sliced fresh chili.
Can I make it without sugar?
Yes, with a small reality check: this recipe is sweetened with honey or maple syrup, so “without sugar” usually means either no added sweetener or a sugar-free sweetener.
No added sweetener: Skip the honey/maple entirely for a punchy, tart sauce. You may want an extra tablespoon of orange juice, and expect a looser, less glossy finish.
Sugar-free option: Swap in a monk fruit or stevia sweetener that measures like sugar, then sweeten to taste at the end. Start small because these can go from “nice” to “too much” fast.
Why did my sauce turn bitter?
The most common culprit is too much citrus pith (the white part). Use a microplane for zest and stop when you hit the white layer. Also, do not scorch the spices. Keep the heat at a steady simmer.
How do I thicken it more?
Simmer a few minutes longer. If you want a tighter, jammy finish fast, mix 1 teaspoon cornstarch with 1 tablespoon cold water and stir it in, then simmer 30 to 60 seconds.