Roast new potato & pickle salad

Name: Roast new potato & pickle salad
Cook time: 1 h
Total time: 1 h
Cuisine: European
Ingredients: 1.2 kg new potatoes; olive oil; 6 cloves of garlic; 1 lemon; 2 sprigs of fresh rosemary; 1 tablespoon plain flour; 1 cucumber; 100 g radishes ideally with leaves; ½ a red onion; 1 teaspoon wholegrain mustard; 2 tablespoons red wine vinegar; ½ a bunch of fresh dill (15g); ½ a bunch of fresh mint (15g); 40 g feta cheese