Gluten-Free Teriyaki Sauce with Corn Flour
A homemade gluten-free teriyaki sauce that delivers authentic umami depth without wheat or barley. This version relies on tamari (wheat-free soy sauce) and corn flour as the thickening agent, creating a glossy, velvety glaze perfect for stir-fries, glazed proteins, and rice bowls. The balance of salty tamari, sweet brown sugar, and warm spice notes from garlic and ginger makes this sauce versatile enough for weeknight dinners and meal prep. Brown sugar quantity adjusts to taste preference, letting you dial in sweetness. Ideal for those managing gluten sensitivity or celiac disease, this recipe proves homemade teriyaki outperforms bottled versions in flavor control and ingredient transparency. Corn flour thickens without starch cloudiness, yielding a professional-quality sauce that rivals restaurant preparations.
Ingredients
- ½ cup tamaricoconut aminos1/2 cupnote: lighter colorslightly sweeterless salty; increase quantity slightly
conf: 2
Full guide → - 1 cup water
- 3 Tablespoon brown sugar, packed
- 1 Tablespoon sesame oilneutral oil1 Tablespoonnote: loses signature nuttiness but sauce remains functional
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Full guide → - 1 Tablespoon rice vinegar
- ½ teaspoon garlic powder
- ½ teaspoon ground ginger
- 2 Tablespoon corn flour, cornstarcharrowroot powder2 TablespoonFull guide →
- 2 Tablespoon water
Instructions
- 1
Combine tamari, water, brown sugar, sesame oil, rice vinegar, garlic powder, and ground ginger in a pot. Whisk to combine and heat over medium.
- 2
In a small bowl, whisk corn flour with water until smooth to create a slurry.
- 3
Pour the corn flour slurry into the warming sauce and stir constantly.
- 4
Continue heating until the mixture reaches a boil and thickens to desired consistency.
- 5
Remove from heat and allow to cool completely.
- 6
Transfer to an airtight jar and refrigerate.
Tips
Whisk the corn flour slurry thoroughly before adding to hot sauce. Lumps cause grainy texture. A smooth slurry ensures even thickening and silky mouthfeel.
Taste and adjust sweetness after cooling slightly. Brown sugar dissolves fully only after boiling; early tasting underestimates final sweetness. Add extra tamari for deeper umami.
Strain sauce through fine mesh if any lumps form during cooking. This step guarantees restaurant-quality gloss and prevents grittiness in finished dishes.
Good to Know
Refrigerate in airtight jar up to 2 weeks. Sauce thickens further as it cools; thin with water if needed before use.
Make up to 5 days in advance. Reheating thins sauce slightly; warm gently over low heat and whisk in additional slurry if needed.
Brush onto grilled chicken, pork, or tofu. Drizzle over fried rice, stir-fries, or roasted vegetables. Use as dipping sauce for dumplings and spring rolls.
Common Mistakes
Skip whisking the corn flour slurry to avoid lumpy, grainy texture throughout sauce.
Don't skip the cooling step; sauce continues to thicken as it cools, so boiling-stage thickness appears thinner than final product.
Substitutions
conf: 3
Full guide →conf: 2
Full guide →FAQ
Can I use regular soy sauce instead of tamari?
No, not if maintaining gluten-free status. Standard soy sauce contains wheat. Tamari is certified gluten-free soy sauce. Coconut aminos works as substitute but tastes noticeably different and less salty.
What if the sauce doesn't thicken properly?
Ensure corn flour slurry is completely smooth before adding and whisk constantly as it heats. If still too thin after boiling, mix additional corn flour with cold water and repeat the slurry step. Overcooking reduces thickening power.
How long does homemade teriyaki sauce keep refrigerated?
Properly stored in an airtight jar, this sauce keeps up to 2 weeks. Tamari's salt content acts as preservative. Discard if mold appears or off-odor develops. Freezing extends shelf life to 3 months.