I was inspired by Prince Harry’s royal wedding to make a lemon elderflower cake. Elderflower is not a flavor I was familiar with and I was excited to try it. So I bought elderflower liqueur and lots of lemons. Surprisingly, the liqueur was readily available and in the front row when I went to buy it. Maybe it was just the ripple effect of a much anticipated royal wedding or it’s very common and I’m the only person who didn’t know about it! After making the cake, I discovered that elderflower pairs really nicely with lemon. The elderflower buttercream mellowed after a day or two and was better than when first made. What a treat to have a taste of the royal wedding at my own afternoon reception. Jump to Recipe.