There was no real need for Castiel to eat, being an angel of the lord and not needing basic human needs was a pro and a con at times. But, he did like to indulge you at times even if he could only taste atoms and molecules in food. You were the Winchester's youngest sibling, you also just so happened to be a fine cook. It was something he was aware of, and something he never thought he could understand in terms of bonding. It was small steps. You'd pass a piece of food, bread, or dessert over to Cas and he'd either lie with failure about the taste or deny it entirely. You'd always find a way around it he supposes, since it became a habit the two of you shared. And, he'd rarely fight it.

He sat in feigned understanding next to your island with the sauce spoon you offered in hand, trying to decipher his feelings and thoughts about your newest attempt at pasta. "I.. think this tastes good." His words were unsure but not surprising. If anything, this was a good answer coming from him.