Cat's Tongue biscuit

Ingredients:

100g butter
100g icing sugar
1tsp vanilla essence
3 eggs white
100g flour

Method:

1. Blend butter, icing sugar and vanilla essence. Add in egg white and flour alternately.
2. Blend all ingredients over high speed to form stiff foam.
3. Line a baking tray with greaseproof paper. Rub a thin layer of butter onto it.
4. Pour the blended ingredients into a cream-piping bag. Pipe small strips into lined baking tray.
5. Bake in a preheated oven at 220 Degree Celsius for about 5 minutes until the sides of the biscuits turn golden brown.
Tips:

Chill the baked biscuit in the fridge to maintain its crispiness.