Ok, I need some help with a metric recipe for Deutscher Apfelkuchen. I can figure out the ingredient measurements. But there is one line in the recipe that makes no sense. It says "Preheat the oven to 170C/150C Fan/Gas 3." What the hell does this mean? I can convert C to F easily enough, but what does the rest of it mean? 170C = 338F, and 150C = 308F. Usually, you bake a cake at 350F (~175C)! What temperature should I use? And I have no clue what "Fan/Gas 3" means. Could one of you culinary experts across the ocean give me some advice, please? Thanks.
https://www.bbc.co.uk/food/recipes/german_apple_cake_59663
https://www.bbc.co.uk/food/recipes/german_apple_cake_59663



I need to find a pan with taller sides I guess. I've had worse cooking failures. I wanted to bring something to my German class tomorrow. Oh well. 