Soak rice separately and soy beans and fenugreek seeds together for 2 hours. Grind as a fine paste in a blender by adding enough water.
Add salt to taste. Mix well and allow to ferment for around 6-7hours or overnight.
After fermentation mix the batter well with a ladle to make crispy dosas. If the batter is thick add some water to make pouring consistency.
Heat the dosa pan and grease the pan and add a ladle full of batter and spread paper thin and sprinkle little oil on top and allow to cook the crispy dosa.