Place the grated zucchini in a colander and stir through the salt. Allow to sit in the fridge for 10-15 minutes, before squeezing out as much excess water as possible (this is important to stop the fritters being too wet).
In a large bowl, combine the drained zucchini, lightly beaten eggs, feta, spring onions, crushed garlic, black pepper, flour, baking powder and fresh dill (if using)
In a separate bowl, lightly whisk the eggs, then stir in the apple cider vinegar and grated zucchini. Stir until well combined.
Heat a large pan with a splash of olive oil. Be careful not to allow the pan to get too hot, or the fritters will burn before they cook through.
Drop 1-2 tablespoons of the fritter mixture into the pan and gently flatten to form a disc shape. Allow to cook for 1-2 minutes, until the edges start to set and you can gently slip a metal turner/spatula under the fritters to flip them.
Allow to cook until golden brown (but not burnt) on both sides. Remove from pan, allow to cool slightly before serving and enjoy!