Yuki’s Kitchen Japanese Fermentation Workshop (June 2026)

From €1300 per person
Monday, 15th to Thursday, 18th June 2026

Join us in the Tuscan countryside for Potentino’s first-ever fermentation course with renowned expert Yuki Gomi—a three-day immersion into Japanese fermentation, seasonal cooking, and mindful nourishment. Expect a hands-on yet relaxed exploration of koji, miso, pickles, and sake kasu, woven into generous shared meals. You’ll learn traditional techniques, explore fermentation from a health perspective, and take home your own miso—just in time to lead into our Summer Cucina Povera VI Food Weekend (sold separately — see here.)

What You Will Learn

  • Koji and its role in Japanese cooking
  • Making and using koji condiments (shio-koji, shoyu-koji, yuzu-koji and more)
  • Traditional miso making, including take-home temae miso
  • Japanese quick pickles (asazuke) and kimchi
  • Amazake as a drink, dessert and seasoning
  • Sake kasu (sake lees): flavour, desserts and health benefits
  • How to apply fermentation to everyday seasonal cooking

This workshop is suitable for home cooks, food professionals, and fermentation beginners alike.

We highly recommend booking both Yuki's Fermentation workshop and our Summer Cucina Povera enjoy the most immersive, informative, stuff-yourself-silly culinary week of the year!

To reserve spots in both courses, please contact: heather.percival@potentino.com

We couldn’t be more excited to welcome Yuki to Potentino for this special event. You can explore her work at yukiskitchen.com, follow her daily practice on Instagram, or read her writing on Japanese Food, Simply (Substack).

Yuki Gomi is a Japanese-born chef, food writer and teacher known for making Japanese home cooking accessible, nourishing and rooted in real technique. Raised near Mount Fuji, she grew up cooking with natural, home-grown ingredients — an upbringing that shaped her belief that good food should be simple, seasonal and heartfelt.

At 19 she moved to Chicago, training at Le Cordon Bleu and working in fast-paced restaurant kitchens that sharpened her professional skills. She later returned to Japan to study with a master soba-noodle chef, deepening her understanding of traditional methods and the precision at the heart of Japanese cuisine.

In 2005 Yuki moved to London, where she developed menus for Japanese restaurants before founding Yuki’s Kitchen, her cooking school dedicated to demystifying Japanese food for home cooks. Her practical, technique-driven teaching encourages students to use accessible, local ingredients while still achieving authentic flavour. She is also the author of Sushi at Home (Penguin), which presents clear, adaptable methods for preparing Japanese dishes in everyday kitchens.

For the past three years, Yuki has joined our castle’s Cucina Povera Food Symposium with her husband Alex and daughter Hannah, contributing her expertise and helping create the first Potentino miso, a unique meeting of Japanese craft and local culinary tradition.

Day 1 (Monday 15 June)

  • Arrival & Welcome
  • Afternoon Workshop:
    Intro to koji, umami & core Japanese ferments
  • Winetasting with castle winemaker Charlotte Horton
  • Welcome Dinner: Shio-koji chicken, white miso soup (dashi intro), seasonal vegetables, green bean & black sesame salad

Day 2 (Tuesday 16 June)

  • Morning Workshop:
    Broad bean chili miso, asazuke pickles, amazake.
    Cook soybeans for miso; prepare miso-yogurt marinade
  • Lunch: Miso-yaki onigiri, pickles, miso soup, seasonal vegetables
  • Afternoon Workshop:
    Japanese-style kimchi, intro to sake kasu, sake kasu cheesecake (served Day 3)
  • Dinner & sake-tasting: Miso-marinated lamb, seasonal dishes, amazake ice cream

Day 3 (Wednesday 17 June)

  • Morning Workshop:
    Temae miso making (to take home)
    Miso styles & tasting
  • Lunch: Tan-tan ramen with chili miso
  • Evening Workshop & Farewell Dinner:
    Cooking together with all ferments: kimchi gyoza, sweet miso aubergine, nanban chicken/fish, seasonal dishes, Sake kasu cheesecake

Day 4 (Thursday 18 June)

Departure

Please note: While the course is broadly outlined here, the program and menu may change in order or detail during the week.

What’s included

  • 2 full days and 3 nights
  • Board and lodging at Castello di Potentino
  • Meals (3 dinners, 2 lunches)
  • All sessions and activities

What’s not included

  • Flights
  • Transfers to and from Potentino

Prices

Prices vary by room choice and number of guests sharing the room.

A single person is from €1,640

Two people sharing a room is from €1,475 per person.

Three people sharing a room is from €1,380 per person.

Please note (deposits and booking queries)

If you would like to pay a deposit

The payment system asks for payment in full. If you would rather pay a non-refundable 25% deposit at the time of booking, please enter the code DEPOSIT25 at checkout. The final payment will be due one month before the start of the course.

If you have any issues booking

Sometimes, it takes a few attempts to clear the cart if you need to make any changes to your room selection etc.

If you have any issues at all, please contact Heather Percival heather.percival@potentino.com

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Yuki’s Kitchen Japanese Fermentation Workshop (June 2026)

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