Ingredients connect hero adventures with the tavern’s food and drink systems. Steam says heroes can return with rare ingredients, while the publisher describes cooking and experimenting with ingredients to develop the menu.
Where ingredients come from
Hero assignments are one explicitly described source of ingredients. The official wording does not establish that every ingredient comes from a quest, or that quests always return a particular resource. Shopping, farming and alternative supply channels would need their own evidence.
Cooking usage and discovery
Ingredients are part of the announced cooking and experimentation systems. That supports the connection to recipe discovery; it does not provide ingredient ratios, substitution rules or a crafting probability model.
What rare means here
The word rare appears in the official adventure description. This wiki does not turn it into a numbered rarity tier, guaranteed drop chance or color-coded classification. No complete named ingredient list is available in the checked sources.
Information still needed
Future entries need a verified name, acquisition source, uses, quantities and any documented storage or spoilage behavior. Stack sizes, prices, spoilage timers and farming routes have not been established and are not filled with guesses.