This coffee cart that recently moved into a permanent home at Full Tank Food Park serves a latte that's far superior to the typical mocha, vanilla or lavender varieties. Ube is a root vegetable that originated in the Philippines and is popular in Southeast Asia. Moonflower co-owner Sam Salomon is of Filipino descent and has long been familiar with ube's many uses. When used in a latte, which is available here hot or iced, it imparts a bright-purple hue and a natural sweetness, with earthy, nutty, vanilla-like notes that pair perfectly with acidic coffee and creamy milk.