In a wide-mouth mason jar, add water, gluten free soy sauce, cornstarch, brown sugar, rice vinegar, garlic oil, toasted sesame oil, and red pepper flakes. Add an air tight cover, and shake.
Peel the ginger with a spoon, and use a microplane to grate the fresh ginger. Add to the sauce, and stir again.
Shake before using.
Store in the refrigerator for up to 5 days, or freeze for up to 3 months.
Notes
Note 1: My favorite gluten free soy sauce is San J gluten free tamari sauce. Note 2: Can be swapped with apple cider vinegarLow FODMAP Notes: Low FODMAP ingredient information is based on the Monash University Food App and FODMAP Friendly App testing results.