Mariani, a major walnut grower, wanted to expand their product offerings. Mattson recommended starting with a line of refrigerated walnutmilk to enter the plant-based beverage market. Successfully developed and launched four flavors of creamy walnutmilk, addressing the gap in the market. The products were launched in 2017 and 2019, gaining positive reception and offering a chocolate walnut milk with reduced sugar compared to traditional chocolate milk.