@luna69, This is a good question. Your dad will get dietary directions from his kidney team. If he is as lucky as I was, he will be happy - with fewer restrictions and able to enjoy eating again. As far as I know, there are no restrictions for the donor, however due to some discomfort and bowel issues for a short while, you might want to delay heavy/rich foods.

Several years ago, when @mauraacro was in the process of donating a kidney, she was most gracious to share her experience as it occurred - a live account. I am sharing a link to her journey and suggest that you read her account at the beginning of this (long and popular) discussion. As always, on Connect, you can join in and ask questions.
Just click this link and you will be taken directly to:
Kidney transplant - The Journey from the Donor's Side
https://connect.mayoclinic.org/discussion/kidney-transplant-from-the-donor-side/
Have you heard anything about a surgery date?

Good morning,
From my husbands experience the only restrictions are around making sure the food is properly heated and not raw. One of his appointments will be with a nutritionist and they discuss no sushi, oysters, buffets and if you have a deli type sandwich the meat must be cooked first and pomegranate and certain oranges are out, they will give you the full list. Of course eating healthy is always important, he will be on prednisone which increases the appetite so watching his diet will always be important but in no way anything like his diet on dialysis which as I remember was really tough - and of course they want you both to drink at least 2 liters of water a day which actually after been fluid starved on dialysis took a little time to get used to.
Good luck