Chocolate dream with a silky smooth icing

Ingredients

• 7.5 dl flour
• 5 dl sugar
• 3 eggs
• 5 dl vanilla skyr
• 1 dl (pasteurised/soured milk, slightly yogurty)
• 2.5 dl light olive oil
• 5–6 tbsp cocoa
• 2 tsp baking powder
• 1 tsp bicarbonate of soda