Preheat the oven to 425°.
In a large bowl, mix together the flours, salt, fennel, and rosemary.
Sprinkle on the olive oil and rub it into the flour until large flakes appear.
Mix together the milk and wine, and stir them into the flour. The dough should be soft, but not wet. Add more flour if necessary, until a ball of dough is formed.
Divide the dough in half, and roll out each part on a lightly floured parchment paper. Try to roll it out evenly, as thinly as possible.
Score the crackers into 2x4 rectangles, trimming the edge scraps, and rerolling them. Sprinkle with additional salt.
Bake for 10 minutes, and then turn over, and bake for 10 minutes more. Cool the crackers on a wire rack and then break apart when cool.