Drain the tuna completely and press the tofu using a cloth to remove excess water. Place the tuna, tofu, and finely chopped vegetables into a mixing bowl.

If the mixture feels too wet, add some flour or more cornstarch to bind it. Shape into patties.

Cook the patties on medium-low heat in a pan until golden brown on both sides.

To make the sauce, combine soy sauce, oligosaccharide syrup, and ketchup in a pan. Add roughly chopped vegetables and cook until tender. Thicken with a cornstarch slurry (1 tbsp cornstarch + 1 tbsp water).