My dog dislikes his new dog food?

My dog dislikes his new dog food?
I just switched my puppy to his new dog food and I made a mistake of not testing it out to make sure he liked it. Now I have a 50 lb bag of food he doesn't like. I tried returning it and they won't take it. What should I do to get him to eat it? I was thinking of maybe adding some low sodium chicken broth or maybe even some bits of plain cooked chicked to make it smell better to him... what should I do? I don't want to throw away this food cause it wasn't cheap. Thx for your help.
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