Carrot Zucchini Fritters Recipe

Name: Carrot Zucchini Fritters Recipe
Ingredients: 2/3 cup plus 1/2 cup sour cream, divided; 2/3 cup lightly packed fresh basil leaves; 1 tsp lemon juice; salt and pepper to taste; 1/2 cup mayonnaise; 1/2 cup horseradish sauce; fritters:; 2 tbsp finely chopped onion; 1 tbsp butter; 1 egg, lightly beaten; 2 medium zucchini, shredded and squeezed dry (about 1-1/2 cups); 1 large carrot, shredded; 1/3 cup king arthur unbleached all-purpose flour; 1/3 cup grated parmesan cheese; 1 tbsp cornmeal; 1/2 tsp salt; 1/8 tsp pepper; oil for frying