Disambiguation
If a recipe calls for 'perilla' you can probably assume it means the leaves, not the seeds. Though the same species as shiso, the two plants are different varieties and can be considered distinct ingredients. Perilla leaf is sometimes incorrectly labeled as sesame leaf.
Description
Perilla can be used as an herb, lettuce, or vegetable, and is common in east-Asian cuisines. The flavor is a blend of mint and licorice, with nutty tones.