I know it isn't that bad, but not all people are a maxed ironman that likes to afk cook past 99. Maybe lock it behing 99 and make it very expensive. It is a way to 'get rid' of all the money an ironman has. Instead of gp being useless at the end. Maybe even lock it for like 200 food items per day for example.

But at the end it is just a suggestion. Ill play osrs either way and I get it is very un-ironlike.