Baking at sea level (high altitude baking) All baking recipes on this website have been tested at high altitude. Follow this guide for baking at sea level: Lower the oven temperature by 10°C For every 5ml (1tsp) baking powder, increase by 1 – 2 ml For every 220g (1 cup) granulated sugar, increase by 15 … Continue reading Baking at sea level (high altitude baking)