That method of cooking the biryani seems quite common in traditional recipes. Check the cookbooks you already have, it's probably in one of them. The method of sealing the pot with dough and slow cooking it with coals underneath and on top (or buried in the sand) is called dum.
It's annoying how little detail they go into on these programmes and how short they are. Gordon was in india for about 8 days i think it said. That's ridiculous, he's only going to learn what his researchers want him to. Take this example, the first recipe i read on his channel 4 site isnt even indian! What a plonker! It's one of the chinese recipes that most restaurants over there serve.
http://www.channel4.com/food/recipes/chefs/gordon-ramsay/chilli-beef-fry-recipe_p_1.html
It's annoying how little detail they go into on these programmes and how short they are. Gordon was in india for about 8 days i think it said. That's ridiculous, he's only going to learn what his researchers want him to. Take this example, the first recipe i read on his channel 4 site isnt even indian! What a plonker! It's one of the chinese recipes that most restaurants over there serve.
http://www.channel4.com/food/recipes/chefs/gordon-ramsay/chilli-beef-fry-recipe_p_1.html


I made enough base to make 3 Madras and 2 Korma's and had 14 T/A containers of base left over to freeze
What I have found is by the time you get everything prepared to make a new batch of Base Sauce you might as well make a ' good size ' batch as the cooking time isn't that much different . 