if you ask that question alone, AI is most likely to get it right, but the usual pitfalls of AI apply; they sometimes randomly get things wrong, people are more likely to miss wrong information when it's surrounded with correct information, and LLMs are specifically good at making text that seems correct on the surface. and in my experience, people often use AI specifically because they don't have a lot of knowledge in an area. if you do already know plenty about cooking, I'm sure using AI is probably fine, I just see it as a red flag.

cooking is also a form of art, with a strong social aspect. using AI for it has a similar ick factor to using generative AI for pictures. I'm not saying I immediately distrust anyone using it, but I do think it's a sign that maybe the person cares a bit less about what they're doing.