Vattayappam is a kind of steamed rice cake commonly served as a snack or breakfast. The main ingredients of this dish are rice flour and coconutmilk. It is popular in the Christian communities of Kerala, though not much popular in North Kerala/ Malabar. It is basically rice and coconut grinded together and fermented with yeast. Though the ingredients used are very similar to that of Appam, the method of cooking is different, Also, it's generally sweeter than Appam.
Method 1
To cook (Kappi Kachan)
1)Raw Rice - 4 tbsp
2) Water - 1 cup
Grind the rice with water to form fine paste.
Heat a pan and add this mixture. Stir it at medium-low heat for a few minutes (pavu kachuka or kappi kachuka) until you get a thick paste (kurukku). It should not form any lumps. Leave aside to cool.
Method 2
Wash and soak the rice in the water for 4-6 hrs and drain it. Grind the rice and grated coconut
Add the cooled Kappi (step 1) and yeast, sugar and salt add some water. The batter should have an idli batter consistency.
Allow it to ferment in a warm place for at least 3 - 5 hrs. When fermented, the batter will almost rise double. Be sure to use a large vessel as it might overflow.
Grease a flat round pan (or idli moulds) and pour the batter to it (fill up to half the pan), and double boil in a larger pan or steam in an idli steamer