Mona Nemmer was brought in from Bayern Munich last summer, while head of fitness Andreas Kornmayer also arrived.
Since Nemmer arrived, each member of Klopp’s squad has had a tailor-made diet created for them based on four compulsory meals a day, the Liverpool Echo report.
Each meal includes mainly local and organic produce and Klopp says Nemmer’s impact was clear during the Reds’ pre-season training camp in California.
“Usually in pre-season the players eat as much as they can as fast as they can,” Klopp told the New York Times.
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“But they were staying to eat and they loved it. They were eating unbelievable food. She had already made that first impression so they paid attention.
“We are not even halfway yet but we are going in the right way. We have even in a wild dream talked about opening a store or doing a recipe book.
“We can make this the best nutrition department in the world. I am not proud of much, but I am very proud of this.”
Nemmer has completely overhauled the set-up at both Melwood and Anfield.
For example there’s now a juicing station in the first-team changing room. Rather than eating sweets at half-time, players now have apple juice laced with caffeine. Post-match, there’s fresh pasta with a range of homemade sauces.
“The players have a brilliant perspective,” Nemmer said.
“They are so open-minded. Together with Jurgen, they have given nutrition an importance and respect, and they have given me the chance to try this. That is not too common.”