Quince & Apple now makes 800 to 1,000 jars of preserves and syrups a day, five days a week. “Clare and I have very complementary skills,” Matt says. “I come from the restaurant background.

Makes 2 pints. Preparation time: 15 minutes. Cooking time: 2 hours, 25 minutes. 6 medium quince, quartered, cored, sliced ¼-inch thick 1½ cups water 4 cups sugar Pinch saffron threads Seeds from ...

1. Smear in grilled cheese. Try Quince & Apple’s fig and black tea preserves in a grilled cheese sandwich with Wisconsin-made Alpine-style cheese from Roth Cheese, like Grand Cru.

In what felt like no time at all, though, I was suddenly seeing Quince everywhere: in Tiktok hauls, in skeptical Reddit posts, and even in my neighbors' mail room cubbies. Not only was Quince ...