Thanks for your good question. I do not know the nos of age group, food habits,state of culture so I can guide u properly. Over all try to v home made cereals based foods with some dry based protien food products like 1 boil egg,banana,apple,orange,guava,mix vegetable based foods, chapati, small rice with it. Take some dry fruits,some rice flakes,idly,yogurt, all cereals based foods must finished within 8 hours from preparing from home. Over all dry foods,little warm,fruits something hygeinic ,fresh,always recomded. U can take good ready made south INDIAN foods as said.these r always fresh ,well cooked.