A tweet by Moore last week set tongues wagging - "Ha! It is wrong to be right too soon. The big guys back the Lamb Burger & so does the little guy."
McDonald's is hoping the partnership with Beef and Lamb New Zealand will follow the success of its 'gourmet' Angus beef burgers, having sold two million kilograms of beef since their introduction.
"We are thrilled with this new partnership and the potential these products have to get Kiwis eating more New Zealand lamb," said Beef and Lamb New Zealand chief executive Rod Slater.
Independent research showed that while 82 per cent of New Zealanders liked lamb, 65 per cent found it too expensive to buy.
Moore said he was in town to show an unnamed American what New Zealand had to offer.
"I can't say who but I've got a very important visitor from a rural state," he said.