Hey,

Sand baking is a method of slow cooking during which the food is exposed to dry heat for longer times, employing sand as the heat transfer medium.

When baking in the pressure cooker is to make a layer of fine sand inside the pressure cooker and place the cake tin on top of it. This sand should ideally be river-bed sand and free of small pebbles. ... With a layer of salt inside the pressure cooker, you can bake heavenly cakes.

Salt is required to make Rate of Rise: In bread making, salt actually plays a very important role. Because salt kills yeast, it works to control the rate of the yeasts fermentation.

Hope this will help you.

Hello

They can be used for baking cake in traditional way which doesn't require oven