The only loose leaf earl grey that they had at the store was with lavender. So i ended up making a lavender buttercream to avoid too much earl grey in the cake. It was a big hit at work!
It's super easy. Your grocery store probably has dried lavender ready to go. You just simmer it at 1 tablespoon lavender to 1/4 cup of milk. Strain out the lavender and then use the milk as you otherwise would.