Cobb cooker

Splashed out aprox $220 and bought a Cobb cooker for The Minister For War , her birthday !! Well she tried cooking a leg of lamb today , mixed results , i was working outside and the smell was beautiful , very similiar to a pizza oven. Well after about 4-5 hours the meat was ready , now must admit it was yum and certainly not dried out or over cooked , and the sweet potatoe and carrot wrapped in foil was nice as well . For whatever reason the spuds were cooked the usual way, boiled lightly first , then immersed in the hot oil of the deep fryer . I reckon for those of us who love a topside roast but dislike the dryness of this cut would find the results of the Cobb good . But the roasting time ?? And pretty sure the heat beads were good quality .
Now her other concern was the very basic instruction book , sales girl advised against buying the cookbook because apparently the Cobb cooker has South African origins and there are a lot of herbs etc in the cookbook which are not generally available in Australia . And a little disappointed that the fry pan which by the way was included in the asking price of $220 was teflon coated but maybe that type of pan is suited to the Cobb ?? Any comments ??