Help over gas mark equivalents?
Can anyone enlighten me on equivalents for gas marks and electric fan ovens? I have looked at the conversion charts but I have one recipe from the 60s (madeira cake, Philip Harben) which says gas mark 3 (my conversion chart says 170 so I have set fan oven at 160). A recent recipe for something else (chocolate and beetroot brownies) has gas mark 5, fan oven 170 in the actual instructions - I bake these regularly. Dilemma!!!!
I used to bake the madeira regularly but haven't for years and certainly not since I have had a fan oven.
Did the gas marks change at some time with North Sea Gas????