my 4 year old daughter is very lean and thin what can I do for gaining weight???

A. dear Mum, for healthy weight gain of your 4 years old daughter, you should give a homemade balanced diet having variety of food groups. grains and millets 4 servings pulses legumes/egg non veg: 1-2 servings seasonal vegetables including green leafy vegetables: 1.5 serving fruits - 1 serving milk and milk products 500ml sugar 4 tsp oil 5 tsp control intake of process packaged food