Set your oven temperature at 340F or 170C
In a bowl sift flour, caster sugar, salt, then add butter, sesame oil, integrate and add water if necessary.
make little balls the same size, lay them on a tray with parchment paper.
then with your thumb, press them gently in the center, 'till they are a bit flat.
Egg wash your cookies then sprinkle some sesame seeds on top, bake them for 25 min or till golden.