The traditional Idli only contains Rice & whole or split urad dal/black gram, nowadays people includes new ingredients accoding to their taste, like poha/flattened rice, methi seeds/fenugreek seeds, rava etc
Protein, Fiber and Carbohydrates. In a single idli, you consume 2 grams of protein, 2 grams of dietary fiber and 8 grams of carbohydrates. For a light snack, that is a notable amount of protein and fiber with minimal carbohydrates. Healthy adults need 50 grams of protein and 225 grams of carbohydrates daily.