Borough 22 and chef Kerth Gumbs launch limited-edition soursop doughnut

London-based doughnut company Borough 22 has partnered with Anguillan-born chef Kerth Gumbs to launch a limited-edition soursop-flavoured doughnut, available from 15^th July to 14^th September 2025. The collaboration combines the Caribbean culinary influences of both Gumbs and Borough 22 founder Ryan Panchoo, with the product to be sold online, at Selfridges Food Hall, and via Deliveroo.

The new offering, called the Soursop Drop, features a soursop custard filling, mango glaze, and is topped with plantain chips. The doughnut is gluten-free, plant-based, and free from common allergens including peanuts, tree nuts, soy, and eggs. It is also certified halal and kosher. 

The collaboration aims to highlight the cultural significance of soursop, a fruit widely consumed across Caribbean and Latin American communities but less commonly used in mainstream British cuisine. For both Panchoo and Gumbs, the fruit holds personal meaning.

“For me, this collab is a love letter to my Caribbean roots,” said Panchoo. “I first tasted soursop in Grenada, and I’ve never forgotten its surprising, joyful flavour. At Borough 22, we’re all about depth and delight, especially with ingredients that carry heritage. Caribbean flavours are rich and often untapped, and this doughnut is banging — you have to try it.”

Chef Gumbs, who currently leads the kitchen at Fenchurch Restaurant in London’s Sky Garden, added: “Soursop is one of the Caribbean’s best-kept secrets — creamy, citrusy, full of soul. I grew up drinking hot tea made from its leaves and herbs when I was ill, and my mum would make soursop smoothies. Now I use it in everything from soufflés to sorbets. It’s got this versatility that really shines in the doughnut custard.”

Borough 22, founded in 2014, focuses on allergen-free baked goods and has established itself within the free-from food sector. The company’s doughnuts are handmade daily and can be frozen upon arrival for later consumption.

Chef Gumbs, a graduate of Le Cordon Bleu, is known for his appearances on BBC’s Great British Menu and Young MasterChef. He joined Fenchurch in 2023, bringing nearly two decades of experience in high-end kitchens to the role.

Food Desk
Photo: Rhubarb Hospitality Collection/Borough 22

A box of six Soursop Drop will retail for £34. For further information and orders, visit Borough 22’s website here.