Crème fraîche dip
Mix the crème fraîche with the herbs, season. Refrigerate until ready to serve.
Mix the tomatoes with the sour single cream. Refrigerate until ready to serve.
Place the breadcrumbs in a deep bowl, mix in the lemon zest and herbs, season the mixture. Place the flour in a shallow bowl and the eggs in a deep bowl. In batches, toss the mozzarella balls in the flour, then in the egg and finally in the breadcrumbs. Pour as much oil into the pan as is needed to just cover the balls, heat to approx. 170°C. Briefly deep-fry the balls in batches until golden brown. Remove with a slotted spoon and drain on paper towels. Serve the hot mozzarella balls with the dips.