Begin by gathering all your ingredients. Chop the yellow onion and fresh ginger root finely to ensure they blend smoothly.
In your blender or food processor, combine the chopped yellow onion, ginger, tamari, rice vinegar, lemon zest, and lemon juice. If you opt for brown sugar, add that too.
Pulse the ingredients until you achieve a smooth and consistent sauce. You may need to stop and scrape down the sides to ensure everything is well incorporated.
Taste your sauce! This is the time to adjust the flavors according to your preference. Want a bit more ginger? Add it in! Prefer a sweeter sauce? A touch more brown sugar will do the trick.
Transfer your ginger sauce to a storage container. If you’re not using it immediately, store it in the fridge for up to a week. Allow the flavors to meld for at least 30 minutes before serving for the best taste.
