Digital cellar book
The cellar book, without the crossed-out lines.
The cellar book has always served the same purpose: knowing what you have, what you drank, and what you thought of it. Tannin keeps this tradition and removes the hassle: retyping, loose pages, and bottles forgotten in the back.
Every entry and removal, dated
The tasting note, right when you open the bottle
The drinking window and location of each bottle
Finished wines saved to buy again
Total bottles drunk since you started

What a cellar book should contain
Six details to record for each bottle.
The wine's identity
Estate, cuvée, appellation, vintage, grape varieties, bottle size. In Tannin, a photo of the label is all it takes: AI reads it all and fills in the entry.
Entry
Purchase date, place, price, number of bottles. This is the baseline for your cellar value and gains.
Location
Rack, row, slot, depth. The detail paper notebooks forget, and that costs fifteen minutes with every search.
Drinking window
The wine's drinking window, suggested by AI and adjustable. A gauge on each entry: too young, ready, past.
Removal
Who drank it, when, with whom. A bottle marked as drunk in one tap, and the slot freed up in the rack.
The tasting note
What you thought of it, in the moment. The real treasure of a cellar book, the one that guides your next purchases.
Three ways to maintain your cellar book
Paper, spreadsheet, or app: what each does well.
The paper notebook
Pleasant, screen-free, reliable. But impossible to search, fragile in a damp cellar, and quickly overwhelmed when buying by the case. It does not know where the bottle is or what it is worth.
The spreadsheet
Flexible and free. It sorts, filters, and calculates totals. But input is still manual, location is just a text column, and nobody opens it in front of the racks with a bottle in hand.
The app
Entry by photo or by a sentence, a visual location, a drinking window that calculates itself, a value that keeps itself up to date. And a notebook that follows you into the cellar, on your phone.
See how Tannin works
The cellar's memory
A cellar book that updates on its own.
In Tannin, the cellar book is not a form to fill out. It updates as you go. Scan a bottle, it is added. Drink a bottle, it is removed, freeing up the slot and prompting for tasting notes immediately. Say "I drank the Vouvray 2019", and it is recorded.
The history of each wine, from purchase to the last bottle
Finished wines saved in memory, ready to buy again
Total bottles drunk since you started
Your notes, exportable to CSV with the entire cellar

FAQ
Cellar book and tasting notes.
Can I transfer my paper notebook into Tannin?
Yes. The fastest way is to photograph the label of each bottle still in your cellar: AI creates the entry. For the history of bottles already drunk, enter the most memorable ones with their tasting note; the rest can stay in your notebook.
What about my spreadsheet?
Import it all at once, in Excel or CSV. The standard columns of a cellar book are recognized: estate, vintage, quantity, price, location, notes.
Are tasting notes free-form?
Yes. A text field for each bottle opened, with no set template. You can also rate out of 20 or 100 if you wish.
Can I share my cellar book?
Yes, with view-only or editing access, with the people you invite. Useful for a cellar shared by a couple or a family.
What happens to a bottle once it is drunk?
It leaves the rack, freeing up its slot, and moves to the history with its date and tasting note. If it was the last bottle, the wine stays in the finished wines list so you can buy it again.
Is the cellar book included in the free version?
Yes, completely: entries, removals, notes, history, export. Only the features that use AI require your API key or the Enthusiast subscription.
Start your cellar book tonight.
Three labels scanned, and your cellar's memory starts writing itself.