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Peel and coarsely chop the garlic and half onion. Add it to the food processor along with the fish and blend it. Transfer the mixture to a bowl and add dill and the zest of half a lemon.
Add a small egg and about 3 tablespoons flour, you can add some more flour if the mixture is very sticky. Don't add too much flour otherwise the fritters will be too dry.
Season the mixture with pepper and salt.
Heat a large dash of oil in a skillet. Add a spoonful of the mixture and press it a bit flat to create fish cookies. Cook on both sides until they're beautiful golden brown and serve immediately.
Extra amazing when served with a tartar sauce, enjoy!