Vanilla syrup is a real vanilla bean, split and scraped, steeped into simple syrup. On its own it's a plain, round sweetener; in tiki history it's best known as the quieter half of Donn Beach's original house allspice blend — reportedly built from allspice liqueur and vanilla syrup in roughly equal measure, kept off his visible bottle line so rival bars couldn't copy it by taste alone.
Real Bean, Not Extract
Vanilla extract is a legitimate shortcut, but it's an alcohol-based tincture built for baking, and a few drops added to plain syrup taste noticeably flatter and more one-dimensional than syrup steeped with an actual pod. A split, scraped bean gives real vanilla's layered, slightly boozy-on-its-own complexity — worth the extra cost for a syrup that's carrying real weight in a drink rather than just backgrounding it.
The Build
A split vanilla bean, seeds scraped in along with the pod, steeps in warm simple syrup off the heat — no need to simmer the bean itself, which can scorch its delicate aromatics.
Storage and Shelf Life
About a month refrigerated with the spent pod left in the jar — it keeps contributing flavor even after the initial steep. Remove it only once the syrup starts to taste flat.
Bottom Line
A simple syrup with one real bean in it is a small upgrade with an outsized effect — round, warm sweetness that reads as genuinely vanilla rather than baking-aisle flavoring.