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How to make fishball sauce (street style )
Make a cornstarch slurry.
Place 3 tablespoons of water and 3 tablespoons of cornstarch in a small bowl. Use a fork, spoon or small whisk to completely combine the water and cornstarch.
The slurry will appear thin and white. The cornstarch will help your sauce thicken and the slurry will prevent the sauce from becoming lumpy as it cooks.