Humblemaker Coffee Co., Seal Beach, Calif., said it released a line of premium functional cold-brew shots under its Humblemaker Coffee Co. of California brand. The line consists of three varieties. Boomtowne is a triple-strength black cold-brew shot with a liquid multivitamin supplement to help improve immune system function, energy and overall health. La Fonda is an antioxidant-rich Mexican coffee cold-brew shot with pure cinnamon and cacao that harnesses the immune-boosting power of green tea. And Black Sea is a Turkish coffee cold-brew shot brewed with cardamom and clove and packed with l-theanine and ginseng.