I'm trying to replicate some of the recipes on The Great Brit Baking
Show: Masterclass, or whatever. I can convert some metric measures,
but the oven temps are jes plain nuts. For example:

"200C/180C Fan/Gas 6"

I suspect the "180C Fan" is a convection oven temp. Yes? No? Not
common, as the convection ovens we used (in my cooking classes) hadda
50°F difference between "fan-on" and "fan-off".

Better to use the "200C" temp, as it's a straight conversion to 400F.

Then there's that "Gas 6" (which also converts to 400F). Apparently,
Limey's ovens have a single digit temp. Well, here's the helpful
conversion:

<http://www.onlineconversion.com/cooking_gasmark.htm>

HTH

nb