Preheat the oven to 200° C fan.
Line the baking tin w/ baking parchment. Add some drops of oil to the bottom to fix the baking parchment.
Put all ingredients in a bowl, roll up your sleeves & start kneading until you get a fine pastry. Start w/ 1 tbsp of cold water - add a 2nd one if necessary (i. e. if the pastry seems too crumbly)!
Form a ball & leave it in the fridge until the oven is ready.
Distribute the pastry evenly in the baking tin w/ your hands & fingers (bottom only!). It doesn't matter if it's not perfectly even.
Bake the pastry for about 10 min at 200° C fan.
Take the baking tin out of the oven & let it rest.
Afterwards reduce the oven to 170° C fan.