Lucinda Ganderton had the book hidden in the bottom of her shopping trolley. Around two years ago, she had taken a trip from London to Brighton, England, to visit Paul Couchman, a food historian and chef whom she met on Instagram. Ganderton, a textile artist whose family had once owned an antiques auction house, and Couchman, who specializes in 1830s British cookery, connected over a shared love of antique kitchenware. Ganderton was clearing out her house when she found a few objects she thought might spark Couchman’s interest. “First time…