Om seeds is a very good medicine for stomach upsets. Flavoured buttermilk rasam is a favorite for my kids. Usually thambli or buttermilk rasam is either taken in the begining or end of the meal. This serves best for digestion. This rasam can be prepared with vaious spices like methi/jeera/mustard all will turn out good.
1 cup Buttermilk
1/3 cup grated coconut
1 tablespoon om seeds
2 tsp jaggery (optional i like to have it a ting of sweet)
salt to taste
method: fry om seeds until a light brown color. Grind coconut om seeds to a fine paste. Add buttermilk to the coconut paste. Add salt and jaggery mix it. The rasam should be like rava dosa batter. This can be served with rice.