Set the oven to 190 degrees and allow 25 to 30 minutes for every lb of lamb, then add an extra thirty minutes. Lamb cooks quicker on the bone than off it. A 5lb joint is enough for six to eight portions.
For a boned joint, set the oven to 190 degrees and allow 30 to 35 minutes for every lb then another thirty minutes. A 4lb joint should serve six to eight people.
A 4lb beef joint will serve six people. Allow 25 minutes per lb with the oven at 190 degrees. For medium-rare beef, allow 25 minutes per lb then twenty minutes extra, for well done allow 30 minutes per lb then thirty extra.
Steak tastes best when fried and for a 2cm thick steak allow one and a half minutes each side if you like it rare, two and a quarter for medium, and four for well done. For a 3.5cm steak allow two and a quarter each side for rare, four and a half for medium and five for well done.
If cooking whole chicken set your oven to 175 degrees celsius and allow twenty minutes for every lb, plus an additional fifteen minutes. If you prefer your chicken crispy set the oven to 230 degrees celsius, allow twenty minutes per lb but do not add on the extra fifteen minutes.