Parmesan and Tomato Scrolls

Ingredients

• 150 g (1 1/2 cups) plain (all purpose) flour
• 1 level tsp cream of tartar
• 1/2 level tsp baking soda
• 1 level tsp sugar
• 1/3 level tsp salt
• 40 g (1/3 cup) cold butter, cubed
• 80 ml (slightly under 1/2 cup) water
• 50 g (1/2 cup) grated parmesan cheese
• 1/2 tsp garlic powder
• 1/3 tsp dried Italian herb
• 6 cherry tomatoes, halved
• A little extra butter