Chive biscuits (savory)

Ingredients:

• 100 g flour;
• 40 grams of soft butter;
• 15 g of grated cheese;
• 1/2 teaspoon salt;
• 1 egg yolk;
• a few chives;
• 2 or 3 tablespoons of water;
• 1 egg white for brushing.
   
   
  The ingresients are for about 18 – 20 biscuits