Berry Picker (3.5e Trait)
From D&D Wiki
You only eat what you prepare for yourself.
Effect: You can only eat food you have hunted or forage for in the wild, and subsequently prepared for yourself. You will only drink beverages made from water collected by yourself from a natural source. You also cannot benefit from food made by spells (ie: Create Food; Heroes' Feast), or from magical items (ie: Ring of Sustenance; Clear Ioun Stones; Sustaining Spoon). If you eat or drink excluded substances, you become sickened for 8 hours.
Roleplaying Ideas: When you have to eat somewhere, or whens someone offer you food, you must decline it, or find some reason to excuse yourself.