The best flavor for a Happy Anniversary Cake often depends on personal preferences, but some popular choices include rich chocolate, creamy vanilla, and decadent red velvet. For a romantic touch, try a strawberry shortcake or a classic white chocolate and raspberry combination. If you're celebrating with a more adventurous palate, a salted caramel or pistachio cake can offer a unique twist. Ultimately, the best flavor is one that resonates with the couple’s taste and adds sweetness to the celebration. Choose a flavor that enhances the love and joy of your special day.