If you are celebrating Cinco de Mayo this week my Tres Leches Cake should be on your menu! It is gluten/grain/sugar free, low carb, and a THM S. The first time I tried Tres Leches Cake at a Cuban restaurant I fell in love. A sponge cake soaked with sweetened milk and topped with whipped cream? It sounded like a dream to me and it tasted like one too.