In 2014, at a residency at Little Paper Planes in San Francisco. Mattes explored the subject of pizza and our weirdly strong feelings about it. “I asked people to write down any kind of pizza memory or association.” That turned into an artist’s book and an installation, “Cheesy Rituals” featuring large, woven pizza slices. Since then, she’s been making and selling these smaller slices. “It’s cool to make an accessible piece that people can get. It’s evolved into a big, ongoing pizza scheme.”