For the best crinkle effect, ensure the dough is well chilled before rolling. Ube halaya jam and ube extract are crucial for authentic flavor and color. You can find them in Asian grocery stores. The liquid purple food coloring is optional but enhances the cookie's vibrant hue. Store leftover cookies in an airtight container at room temperature for up to 3-4 days.
Keyword ube, crinkles, cookies, Filipino, purple yam, dessert, baking