food item set out for show only
餖 centers on food that is arranged for display rather than for eating: a decorative spread or a showpiece dish.
餖 combines 飠 (food) with 豆, which likely contributes the sound. The character is rare and its exact historical development is uncertain.
The food radical 飠 beside 豆 (bean) suggests a dish of beans arranged purely for show, like a decorative centerpiece that no one eats.
For トウ, imagine a towering display of show food: tower -> トウ, and the food is just for looking.
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