Japanese noodles, (kokuji)
饂 is a kokuji created in Japan to refer specifically to udon, the thick wheat noodles. Its meaning is narrowly tied to this food.
seafood and vegetables cooked sukiyaki style and served with udon
饂 is a Japanese kokuji, combining the food radical 飠 with 昷 (likely chosen for its sound ウン) to represent udon noodles.
The food radical 飠 tells you it's something to eat. The right side 昷 looks a bit like a bowl with a lid, perfect for holding thick udon noodles.
For ウン, imagine a steaming bowl of udon that makes you say 'Oon!' (like 'mmm') when you smell it: 'Oon' -> ウン.