High quality peaches, halved.
In-game description

Pinnacle peaches is a food item in The Long Dark.

This can requires a can opener, hunting knife, or hatchet to be opened while retaining its full content. It is also possible to smash the can open, but this will result in losing some of its contents to spillage.

Consuming this item also reduces thirst by a significant amount. However, even that does not make up for its lackluster weight-to-calorie ratio, and it is essentially a straight downgrade from Condensed milk. However, unlike milk, Pinnacle peaches can be heated up at a fire to give a boost to warmth.

Food and drink
Canned Condensed milkDog foodPinnacle peachesPork and beansTomato soup
Animal meat Black bearMooseRabbitVenisonWolf
Fish Coho salmonLake whitefishRainbow troutSmallmouth bass
Plant Cat tail stalk
Miscellaneous Beef jerkyCandy barEnergy barGranola barMilitary-Grade MREPeanut butterSalty crackersTin of sardines
Water UnsafePotable
Soda OrangeGrapeSummit
Miscellaneous Herbal teaCoffeeEnergy drink