Buttermilk Biscuits With Tomato Gravy

• 3 tomatoes
• 1 biscuits in a mixing bowl
• 250 gr self rising flour
• 240 ml water
• 180 ml buttermilk
• 120 ml milk
• 110 gr butter
• 95 gr shortening
• 65 gr self rising flour
• 8 gr sugar