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Inside Winemaking - the art and science of growing grapes and crafting wineAuthor: Jim Duane: Winemaker, Grape-grower, and Wine Educator
Welcome to Inside Winemaking, your go-to resource for all things winemaking, designed for those already immersed in the wine industry and anyone with a passion for the art and science of crafting the perfect bottle. Inside Winemaking was created to provide direct access to the people in charge of creating world-class wines and for listeners looking for a non-traditional, informative, and entertaining take on winemaking. Our mission is to be a comprehensive resource hub for winemaking, providing valuable content to enthusiasts and industry professionals alike. Your host Jim Duane (Napa Valley winemaker) interviews some of the top winemakers in California and beyond. Each episode features a winemaker, grape-grower, or technical wine pro and dives deep into their background and expertise. Wine newbies and expert enophiles will be entertained by winemaking stories and learn more about growing grapes and making wine. Join us on Inside Winemaking as we uncork the secrets of winemaking, share valuable insights, and create a vibrant community of wine enthusiasts and industry professionals. Subscribe now and elevate your winemaking journey! Language: en Genres: Arts, Food, Society & Culture Contact email: Get it Feed URL: Get it iTunes ID: Get it Trailer: |
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222: Jillian Johnson DeLeon - Laffort
Episode 222
Tuesday, 22 September, 2026
Jillian Johnson DeLeon - Laffort In this episode, Jim sits down with Jillian Johnson DeLeon of Laffort to dig into the practical mechanics of yeast nutrition, starting with the difference between organic (amino-acid based) and inorganic (DAP) nitrogen sources. They walk through how to calculate the Nitrogren needs for a successfule fermentation across a two-addition strategy, timing the first dose within 24 hours of pitch (or at first signs of cap formation for native ferments) to support the yeast's growth phase, and the second closer to mid-fermentation to carry them through to dryness without triggering Hydrogen sulfide production. The conversation covers dosing heuristics like the one-third organic to two-thirds DAP ratio for that second addition, how nitrogen demand varies by yeast strain and biomass production, fermentation temperature's effect on ester versus thiol expression, the risks of both under- and over-dosing nutrients, and the case for early co-inoculation with malolactic bacteria to avoid stuck ferments and reduce spoilage risk. Jillian also shares her own field-tested Brix-to-potential-alcohol conversion figures and closes with an overview of Laffort's broader product lines, from oak alternatives to vineyard applications. Resources from this Episode Laffort This podcast is sponsored by InnoVint. Wineries of all sizes rely on InnoVint's winery operating system to optimize vineyard tracking, manage wine production processes, automate compliance reporting, track costs seamlessly, and make data-driven decisions. The best part? The software is intuitive, easy to use, and mobile and offline friendly! And with the highest-rated customer service in the industry, you're guaranteed to have a smooth transition, even right before harvest. Learn more: innovint.us Get a demo: innovint.us/request-a-demo/ Join our free winemaking community: innovint.us/join-the-punchdown/ Check out the Fundamentals of Winemaking Made Easy video course The Inside Winemaking Podcast on iTunes Now on Spotify And Amazon Music
