Preheat oven to 150 C / 300 F. In a bowl, combine all the ingredients. Take care to mix just enough and do not over-knead. Roll out dough, using just a little at a time.
Prepare a parchment paper-lined baking sheet. Transfer cracker dough to pan. Lightly pierce crackers with a fork and using the back of a butterknife, cut out rectangular cracker shapes. Light moisten the top of the Sprinkle some coarse salt on the dough.