250くらいならフツーに食べられるのでぜんぜんオッケーですけどね(笑)
ソースはデミグラとオニオンが選べますが、オニオンが正義らしいです。
塩で食べてもおいしいよ！

For 250g of steak, though, I'd have been totally okay eating it normally. :-) You could choose between demi glace or onion for the sauce, and onion seemed like the right thing to do. Even just eating it with salt, it's delicious!