What happens in our brains when we look for and find wild food – can you help?

I'd like to understand more about what happens in our brains when we go foraging for wild food. Why are hunting for and finding mushrooms, shellfish, berries exciting/compelling/satisfying? I'm assuming dopamine/oxytocin/reward centres may be involved…can anyone explain how it works? Can you recommend any reliable but not excessively technical reading? Please comment below if you can help!