This is an old time favorite and many would remember it as Hup Toh Soh or walnut cookies as we called it...interestingly, there isn't any walnut in it but still taste very nutty...super easy to make, don't need any special equipment..... highly recommended.
125g plain flour
1/4 tsp baking powder
64 g sugar
1/4 tsp alkaline water
1/4 tsp fine salt
10g butter (salted)
75ml cooking oil or peanut oil
In a mixing bowl, place your sifted flour/baking powder and rub butter in until crumbly. Slowly add in cooking oil and and alkaline water into the flour and mix until a soft dough pliable dough is formed. Weigh 15g of dough and shape into a ball. Roughly use that ball of dough to get about the same size for the rest of the dough and place on to a baking sheet. Use a chopstick to poke a hole into the middle. Alternatively use the back of a teaspoon to press gently on the balls to flatten slightly.
Ideally use a suitable bottle cap to press on the centre of each cookie to create an inner circle on the top as you press down on the ball of dough.
Brush with egg wash (egg yolk + 1 tablespoon of milk) and bake at 170’C for 20 minutes or until golden brown.