How An Odd Macadamia Nut Milk Company Caught Walmart’s Attention Without Doing Any Marketing Posted by February 19, 2018 Leave a comment on How An Odd Macadamia Nut Milk Company Caught Walmart’s Attention Without Doing Any Marketing Milkadamia started as an experiment in coffee shops. It’s now carried by 5,000 stores in the U.S.