EarthBound/Food

Food
Food is used to recover HP and PP throughout the game. Different foods will recover different amounts of HP and PP. For maximum effectiveness, use condiments with your food. Note that Poo recovers only 6 HP for every type of food in the game with the exception of Brain Food Lunches which he gets an increased recovery for. He recovers more PP with Bottles of Water than everybody else, however. The Jar of Delisauce goes well with everything.

Condiments
Condiments will automatically add themselves to the food you eat, increasing the effectiveness of that food. Certain condiments go better with certain foods, such as Ketchup Packet and Hamburger. These effective combinations will increase recovery by more than say Hamburger and Sugar Packet. The Jar of Delisauce goes well with everything.

Medicines
Medicines remove status ailments and revive unconscious party members.

Stat Boosters
Stat boosters increase a party members' stats.