I am fairly rubbish with roasts.
I end up frantically googling recipes and going round and round the internet every time, and usually still getting it wrong. Can anyone recommend a "classic" cookbook that is good for giving you confidence with roasting meat? By classic I guess I mean an old fashioned one that teaches you the basics about cooking temperatures and times per weight - e.g. "chicken is a lean meat that needs added fat like butter rubbed over it before roasting, but duck has enough fat on it so doesn't need extra". "Lamb needs to be roasted for 20 minutes at 200 degrees C, then at 160 degrees for 20 minutes per 450g, then left for 10 minutes with foil over it before carving" or similar.
The trouble I find with most recipes on the internet is that they ask you to cook the roast according to a list of very specific ingredients, or tell you to start with a joint of pork weighing exactly 2kg or whatever, which means that I have no idea how to adjust cooking time when my joint weighs only 1.2kg.