60-75 days. The 'Shishito', also known as Wrinkled Old Man, is finding its way into many restaurants as a popular appetizer. The 2"–4" slender peppers have a citrusy, slightly smoky flavor enhanced by grilling or sautéing, and can be the life of the party when an occasional hot one passes the mouth of the unsuspecting. Highly productive plants produce green peppers that ripen to red.