Homemade Crackers (made with sourdough starter)

Primary Ingredients:
1 cup sourdough starter
1 cup flour
1/2 tsp salt
4 tablespoons of fat (for example - butter, leaf lard, coconut oil, ghee etc.)
2 tablespoons of dried or fresh herbs/spices (for example - rosemary, thyme, umeboshi, dill, chipotle etc.)

Additional Ingredients:
oil (for brushing the top of the crackers before baking)
salt (for sprinkling on top)