Ingredients:

1 small cup Yellow Moong dal - soak in wate for 1/2 an hour
1 medium size cucumber (optional)
1 carrot - grated
2 - 4 green chilly - finely chopped
1 sp lemon juice
1/2 sp mustard seeds
1 sp oil
Salt

Method:
In a bowl put soaked moongal dal with out water.
Put grated cucumber and carrot and mix.
Add finely chopped green chilly.
Add salt and mix well.
In a pan pour oil and make seasoning.
Pour the seasoning in this.
Add lemon juice and mix well.
Your ' kosambari' is ready to serve.
Note: You can add grated mango also in this. At that time you can avoid lemon juice.
Or you can add grated fresh coconut in this.
Usually we prepare this on Sri Rama Navami day with Neer moor and Panagam.