Scout & Zoe’s Catazztic feline food toppers combine nooch with a hypoallergenic, high-quality alternative protein, black soldier fly larvae. Black soldier fly larvae are a beneficial source of multiple nutrients while being environmentally healthy and sustainable. Nutritional yeast, or nooch, is great for getting picky cats to eat. Nooch is not only an amazing appetite stimulant, but it is also a complete protein that is loaded with B vitamins, is low in fat and assists in boosting a feline’s immune system, the company states.