SommDay Deductive Tasting

with Master Sommelier Tim Gaiser

If you are new to wine, and find it interesting, but are petrified at the prospect of having to describe or identify a wine in front of your peers—you’re not alone. If you’ve seen others do it with confidence, but somehow you struggle and are left wondering, How will I ever become a better taster, everyone else seems to be better at it than me,’—we hear you.

Our ONLINE SommDay School™ Deductive Tasting course is designed and presented by Master Sommelier, Tim Gaiser.  In this course, we’ll cover the Deductive Tasting Method, which is widely used by many sommeliers and other wine professionals. To learn the method, we’ll work with the Deductive Tasting Grid to help assess the appearance, nose, and palate of a wine. The grid will also help to format the best possible conclusion for a wine in the context of a blind tasting.

Please note your course starts immediately upon enrollment and you will have 6-months of course access.

Check out the outline below for an overview of the course curriculum.

Course curriculum

  • 1


  • 2


  • 3


  • 4


    • Introduction

    • 3.1 | Important Signatures for Major White Grape Varieties

    • 3.2 | Important Signatures for Major Red Grape Varieties

    • Review & Quiz

  • 5


    • Introduction

    • 4.1 | Markers for Classic White Grape Varieties

    • 4.2 | Markers for Classic Red Grape Varieties

    • Review & Quiz

  • 6


    • Course Review

    • Deductive Tasting Final Exam

Why you will LOVE taking this online certification class!

Receiving recognition is a pivotal moment for you. Once you have successfully passed the exam we will send you your certificate and badges.

  • Digital Certificate

    Our digital certificate and badges are designed so you can share your achievement with a single click. You can share to 100+ social media platforms, and it's easy to add your achievement to LinkedIn.

  • Share Your Success

    Any digital certificates can easily be saved as a PDF with all of your certificate information in place. You can print your achievement and hang it on your wall if you really miss having a traditional paper certificate.

  • Build Your Reputation

    You can even embed your digital certificates and badges into your email signatures or website to share your achievements with their colleagues and clients.

Your certification your way

you control where, when, and how to share your success

Each certificate is protected by blockchain, meaning that you are protected from anyone fraudulently copying your certificate and entering their name. After all, you worked hard for it!

About the Instructor

Master Sommelier Tim Gaiser

Tim Gaiser is an internationally renowned wine expert and lecturer. He is one of 240 individuals worldwide to attain the elite Master Sommelier wine title and is the former Director of Education and Education chair for the Court of Master Sommeliers, Americas. Tim continues at the Court on the Board of Directors and sits on the exam standards and exam development committees.

Over his 25-plus year career, Tim has taught thousands of students in wines and spirits classes at every level as well as developing wine education programs for restaurants, winery schools, and wine distributors. He has experience in all phases of the wine industry – online, wholesale, retail, winery, and restaurant – including stints at Heitz Wine Cellars in the Napa Valley and Bix and Cypress Club restaurants in San Francisco, and Virtual Vineyards/the original His client list includes Fosters Global Wines, Diageo, American Express, Evian, Pepsico International, Fiduciary Trust, Franklin-Templeton, Morgan Stanley, and Wells Fargo.

Tim has written for a number of publications including Fine Cooking Magazine and Sommelier Journal. He also writes for numerous wine and spirits clients including Champagne Perrier Jöuet, Wines of Germany and the Portuguese Cork Quality Association. Gaiser has served as the author and lead judge for the Best Young Sommelier Competition and the TopSomm Competition, the two major American sommelier competitions.


  • Is there a book with the course?

    No, the course is entirely online, so students should take notes during the course if they want hard-copy study materials.

  • Is there any wine tasting involved?

    Tasting the wines during the course is a great way to get the full measure of the course material, but it is not required. There is no tasting component to the final exam.

  • What is the final exam like and what do I get if I pass?

    At the end of the course, there is an optional final exam. The exam is taken online at your convenience. There is no additional cost for this exam. The test is 50 questions long, with a variety of question types. A practice exam is available after the last lesson to help prepare for the actual exam. Students who pass the exam will earn a badge and certificate of completion. Most importantly, after completing the course, you will have a comprehensive understanding of the deductive tasting methodology. Armed with this information, you will be a more confident and successful blind taster.

  • How does this course complement other wine courses?

    For anyone pursuing an extended program of wine studies, the SommDay Deductive Tasting course is a great way to deepen your understanding of the Deductive Tasting Method, which is widely used by many sommeliers and other wine professionals to help assess the appearance, nose, and palate of a wine. The course will also help you to format the best possible conclusion for a wine in the context of a blind tasting.