In a large bowl, combine the cassava flour, salt, and sugar (if using). Mix well.
Gradually add the coconut milk, stirring constantly to form a smooth dough. If the mixture is too thick, add a little water, one tablespoon at a time, until it reaches a dough-like consistency.
Divide the dough into small portions and shape each portion into flat, round cakes (about 1/2 inch thick).
Place the cakes on a baking sheet lined with parchment paper. You can also use a flat surface for this.
Heat a griddle or non-stick skillet over medium heat.
Cook each bammy for about 3-4 minutes on each side, or until golden brown and cooked through.
Alternatively, you can bake the bammy in a preheated oven at 375°F (190°C) for about 15-20 minutes, flipping halfway through, until golden and firm.
Enjoy your meal!