For The Cookie Dough
- 125 grams Butter, unsalted, cubed & softened a little. (1 stick + 2 tsp, 4½oz)*
- 120 ml Oil (4 fl oz, ½ cup, Vegetable oil or other neutral oil)
- 1 ½ tbsp Cider Vinegar (Apple Cider Vinegar or Vinegar)
- 1 tsp Salt
- 10 grams Bicarbonate of Soda 2 scant tsps- below level, of Baking Soda)
- 1 Egg Yolk (keep white for glazing on top)
- 3 tsp Icing Sugar (powdered sugar)
- 312 grams Plain Flour (approximately) (2½ cups All Purpose Flour, 11oz approximately)
For The Topping
- 1 Egg white (from above with a splash of milk or cream)
- Seeds of choice (optional) (sesame seeds, Poppy seeds, pumpkin, sunflower, Nigella seeds, Chai seeds, Flax Seed, etc.)
* See notes & before Recipe Card, for alternative ingredients