"Desserts? Oh, please? Can you help me? I...like foods that taste enough for me. Like, spicy, sour, fermented. A bowl of plain mashed potatoes is hell to me, and like. I imagine vanilla ice cream would be the same. But I haven't really dug into, um. What desserts there are, that I might like?"

That isn't at all a refusal to discuss his nature, it's just prioritization in action.