Refill Heart Containers (Breath of the Wild)
"It's too gross to even look at. A bizarre smell issues forth from this heap. Eating it won't hurt you though...probably."
Breath of the Wild
Dubious Food is created when any combination of incompatible ingredients - such as food ingredients with lizards, frogs, insects or Monster Parts; or food ingredients which do not constitute a valid dish by themselves (such as Hylian Rice) - are cooked in a lit Cooking Pot.
Unlike Rock-Hard Food, it is possible to create Dubious Food which restores multiple hearts - for instance, five Tabantha Wheat create Dubious Food which restores five hearts; and Moza's so-called "ancient meat dish" of meat and a Guardian part can have 12 hearts with four Raw Gourmet Meat and a Giant Ancient Core.
Dubious Food has a distinct cooking animation and sound, with clanking metal sounds and a puff of black smoke at the end. Link will also grimace when eating it.
Age of Calamity
The recipe for Dubious Food is obtained by completing the quest Extreme Survival Cuisine. Cooking it before a scenario will double the Rupees obtained, at the cost of reducing maximum health for the duration by 20%.