You can use some egg yellow food colouring for the yellow colour if you do not have saffron
Potatoes are optional
The amount of masala can be reduced to 1 tablespoon for a milder Biryani
This biryani tastes even better the next day so you can make it ahead and serve the following day
Best served with Raita, made with yogurt
You can replace the chicken with lamb or vegetable. However if using lamb I recommend you cook the lamb on the stovetop first so it is partly tender before further cooking in the oven