MUSIC: Smile! presents an eclectic mix of bands tonight at the Knockout with gothic/dark Chelsea Wolfe, pop/folk Helene Renaut, singer/songwriter J. Irvin Dally, and folk rock/shoegaze Upstairs Downstairs.

9 p.m. // The Knockout (3223 Mission St) // $7

FOOD: 'Tis the season of heirloom tomato goodness, and 18 Reasons, a member of the Bi-Rite family businesses, is having a Mozzarella and Heirloom Tomato Tasting Course. The class will learn how to make fresh mozzarella to pair with fresh heirloom tomatoes for a melt-in-your-mouth caprese that the class will eat.

7 p.m. // 18 Reasons (593 Guerrero St) // $20, buy tickets