By tiwenraj, 26 April, 2023 Forum iOS and iPadOS Gaming how to feed food for companion on lost vault? Options Log in or register to post comments Comments steps. Go to the show button, next to the part about the companion. find the atributes button, click on that, then there's a feed button, click on that and if you have food you can find it then click on it then click yes to feed them. question where i can get food for companion? Answer. You need to explore the areas with your water, then once it's done, if you're using the auto setting; go to items and look there.