Happening Saturday

MUSIC

Katy Perry To judge Katy Perry as inauthentic or unoriginal would be wrong; as with a great ad campaign, familiarity is her greatest achievement. She can feign a rocker’s stance on the Alanis-inspired “Circle the Drain” or a hip-hop diva’s stutter on the Rihanna-influenced “E.T.” and convince you it fits her perfectly. Nokia Theatre, 777 Chick Hearn Court, L.A. 8 p.m. Sat.-Sun. $34.50-$49.50. nokiatheatrelalive.com

FOOD

Taste in San Pedro More than 30 restaurants, bars and venues will take part in Taste in San Pedro, a showcase for local cuisine and night life in the South Bay enclave. Concerts featuring Poncho Sanchez and Fan Halen round out the weekend. Harbor Boulevard Promenade and Berth 87, Port of Los Angeles. Noon-9 p.m. Sat., noon-7 p.m. Sun. Free. Tasteinsanpedro.com.

Tomato Tasting and Sizzlin’ Summer Salsa Contest Savor the splendor of the tomato at Fullerton’s Tomato Tasting and Sizzlin’ Summer Salsa Contest. The tomato in its purest form and many varietals of salsa are up for your consumption and opining, all grown by locals at home. Fullerton Arboretum, 1900 Associated Road, Fullerton. Free with admission ($3 suggested donation). fullertonarboretum.org

EVENTS

Rethink/LA Los Angeles was built as a city of the future, and in a time of flux it has again become a flash point for societal change. Rethink/LA is a series that examines the environmental, social and cultural issues facing the city as it plans a new vision for its infrastructure. A+D Museum, 6032 Wilshire Blvd., L.A. Through Sept. 4. $10. Aplusd.org.

Mammoth Festival of Beers and Bluesapalooza Mammoth is usually known for its excellent skiing, but for the Mammoth Festival of Beers and Bluesapalooza, it turns its focus to another frosty attraction. More than 50 microbrewers team up to pull taps in pristine environs, with accompanying blues concerts featuring Blues Traveler, Dumpstaphunk, Robert Cray and more. Mammoth Lakes Resort, Mammoth. Sat.-Sun. $30-$49. Mammothbluesbrewsfest.com.

ART

Mr. Fish Dwayne Booth, the political cartoonist also known as Mr. Fish, is a ubiquitous presence in such venerable publications as Harper’s, Vanity Fair, The Atlantic and many others, but is most frequently seen at Truthdig. In conjunction with the launch of his new book of cartoons and essays, “Go Fish: How to Win Contempt and Influence People,” the Robert Berman Gallery will mount an exhibition of Mr. Fish’s original drawings, prints and paintings, which also appear in the book. For the Saturday opening reception, he will be on hand to sign copies and discuss his work with Truthdig Editor in Chief Robert Scheer. Robert Berman Gallery, Bergamot Station, 2525 Michigan Ave., Suite C2/D5, Santa Monica. 6-9 p.m. Free. (310) 315-1937. https://www.robertbermangallery.com.