Jain cooking. Udaipur

I have been invited in the house of a jain family; they don't eat any meat , egg..;
About the vegetables they only use the aerian part of them, what is growing in the ground is considered as unpure, as onions, garlic, potatoes...
When I leaved, her husband said me: "i hope you will stop eating meat when you will be back in your country".
I didn't.,