|Do you have a patch of purple basil that seeds like this?|
|Red Perilla (Perilla frutescens) or Beefsteak plant.|
In Japan perilla is called shiso and is frequently used in Asian cooking and often eaten with sashimi or cut into thin strips in salads, spaghetti, and meat and fish dishes. In 2009 Pepsi Japan released a new seasonal flavored beverage - Pepsi Shiso. There is also a green variety, but the red variety is often used to add color to dishes, even as a dye for some foods.
|Purple Ruffles Basil|
|Osmin Basil (purple variety)|
|Red Perilla. Note that the leaves do not seem as glossy.|