From SpongePedia, the First SpongeBob Wiki.
Sea-Nut Butter is a common spread in Bikini Bottom.
The jar of sea-nut butter is brown with a white label.The words printed on the label simply read: sea-nut butter in big capital letters.
- It's name is a portmanteau of Peanut, and Sea. Therefore making the name "Sea-Nut Butter".