01 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together flour, sugar, baking powder, baking soda, and salt.
03 - Add cold cubed butter to the dry mixture. Cut in with a pastry cutter or fork until mixture resembles coarse crumbs.
04 - In a separate bowl, whisk together the egg, cooled sweet tea, buttermilk, pickle brine, and optional lemon zest.
05 - Pour wet ingredients into dry mixture. Fold gently just until combined. Avoid overmixing.
06 - Fold in chopped dill pickles and fresh dill, if using.
07 - Turn dough onto a lightly floured surface. Pat into a 1-inch thick round. Cut into 8 wedges.
08 - Place wedges on prepared baking sheet. Brush tops with melted butter and sprinkle flaky sea salt over each.
09 - Bake for 16 to 18 minutes or until golden brown. Cool slightly on the sheet before serving.