Preheat oven to 200ºC and line 2 large baking sheets with baking paper.
Place all the dry ingredients into a bowl and mix thoroughly.
Add the oil and water and mix to a dough with a fork.
Bring together with your hand to form a ball and knead in the bowl for a minute.
Split the dough in half and place one half on a lightly floured surface.
Roll out the dough as thin as you can get it (there will be a lot of spring in it), about 2mm.
Use a 6 cm cookie cutter to cut out circles and place on baking sheet.
Prick the dough circles all over with a fork to prevent them rising.
Bake at the top of oven for 11 - 12 minutes or until edges turning golden and cracker is crisp.
Repeat the process with the other half of the dough.
Place baked crackers on a rack to cool.
Keep in an airtight container.