The defending champion, 27, is served up the same three dinners during the tournament, and said his options are kept "simple".
"You might not be surprised to hear that I don't order a pizza when I get in," Murray said.
He added: "I have either salmon with rice, roast chicken with vegetables and potatoes, or steak with salad.
"My girlfriend Kim will cook and I know each night that it will be one of those three.
"I had salmon on Tuesday night, so I knew that on Wednesday it would be one of the other two. My guess was steak."
Meanwhile, his breakfast is very fruity - but the bananas need to be mushed up.
"If my dinner options are limited, breakfast time can be a bit more creative.
"I usually have a smoothie, and on Tuesday morning it involved strawberry yoghurt, raspberries, apple juice - a bunch of stuff - and then I had an apple and a peach.
"I also had a bagel with banana. I've been asked a lot of questions about all sorts of things during my career, and I think I've said somewhere in the past that I don't like bananas.
"Well, I can update you - if I mush it up and put it on a bagel, it's fine! I guess it must be the consistency," he said.