The most beautiful appetizer I like to serve... Caviar Eggs on a Cracker. TIP: I buy black peppered water crackers for the base or make thin, toasted slices of baguette. Slice hard boiled eggs at an angle, add a dollop of sour cream or Greek yogurt, and garnish with salmon caviar. Don't like caviar? Use pimiento, finely chopped carrots and cucumbers, a beautiful olive slice, or a chunk of salmon. It's all good.