The mistake most first-time buyers make is picking a syrup flavor based on what sounds interesting on the label instead of what's already in their liquor cabinet. That's how someone ends up with a bottle of Black Walnut Proof Syrup and a bottle of tequila that don't actually pair well together. The better approach is to start from the spirit you already drink and let that decide the flavor. Here's a straightforward guide, organized by what's already on your bar cart, plus one simple answer if you only want to buy a single bottle.
Let your spirit choose the flavor, not the label
Every Proof Syrup flavor is built to sit behind a specific kind of spirit rather than to taste good on its own. Traditional leans on warm baking spice and raw cane sugar, which is the classic partner for brown spirits. Black Walnut adds a toasted, nutty depth that plays well with anything aged. Maple Bacon brings smoke and sweetness that can work outside whiskey entirely, and Orange is bright and citrus-forward, built for spirits that don't want spice getting in the way. Matching the syrup to the spirit already in your cabinet means the first bottle you buy actually gets used, instead of sitting behind the vermouth.
Variations: the best first bottle by spirit
Bourbon or rye drinkers
Best for: Traditional first, then Black Walnut.
If bourbon or rye is already your go-to, Traditional Proof Syrup is the obvious starting point — it's built specifically around the Old Fashioned and plays directly into the spice notes already in a good rye. Once you've got that one down, Black Walnut is the natural second bottle: it trades some of the spice for a nuttier, more savory profile that pairs especially well with a longer-aged bourbon. For more on how the two grains change the drink, see our breakdown of bourbon vs. rye in cocktails.
Rum drinkers
Best for: Traditional or Black Walnut.
This is the pairing people don't expect. An aged rum has enough caramel and molasses depth to hold up against Black Walnut's nutty, earthy notes, which is a more interesting match than most people assume when they hear "cocktail syrup." Traditional is the safer of the two if you want something closer to a classic profile. Either way, reach for an aged rum rather than a light or white rum — the syrup needs something with body to meet it halfway.
Tequila or gin drinkers
Best for: Orange.
Orange Proof Syrup is the one flavor in the lineup that works genuinely well outside of whiskey. It's citrus-forward without the baking spice that defines Traditional and Black Walnut, which makes it a natural fit for tequila (think a syrup-forward twist on a Paloma) or gin, where a bright citrus note complements the botanicals instead of fighting them. If your bar cart skews away from brown spirits entirely, this is where to start.
Brunch hosts and skeptical guests
Best for: Maple Bacon.
Maple Bacon Proof Syrup is the pick if you host brunch regularly, or if you're trying to win over a guest who insists they "don't like whiskey." The smoke and maple sweetness front-load the flavor before the spirit registers, which makes it an easy entry point for someone who's hesitant, and it's equally useful stirred into coffee or drizzled over pancakes for the same brunch table. Note that unlike the other three, Maple Bacon isn't vegan, since it uses animal-derived ingredients — worth knowing if you're cooking for a mixed table.
If you only buy one bottle
Best for: Traditional, no contest.
Traditional is the one flavor that works across the widest range of spirits and situations, and it's the syrup the brand is built around. If you want proof it works before you commit, here's the standard build:
Ingredients:
- 2 oz bourbon or rye
- 3/4 oz Traditional Proof Syrup
- 2 dashes aromatic bitters
- Orange peel, for garnish
Instructions:
- Add the whiskey, syrup, and bitters to a mixing glass with ice.
- Stir for about 30 seconds, until well chilled.
- Strain over a single large ice cube in a rocks glass.
- Express the orange peel over the top and drop it in.
For the full breakdown of how much syrup to use and why, see our guide to syrup ratios in an Old Fashioned.
Why the sugar behind the flavor matters as much as the flavor
Part of why the spirit-first approach works is that every Proof Syrup flavor starts from the same base: raw cane sugar, cooked small-batch rather than mass-produced with corn syrup. That base is what gives each flavor real body and a clean finish, so the spice, nut, smoke, or citrus notes read as actual ingredients instead of flavoring stirred into a thin syrup. A mass-market mixer built on corn syrup tends to taste the same regardless of which spirit you pour it over, which defeats the whole point of matching flavor to spirit in the first place.
A few things to check before you buy
Check for nut allergies at your table
Black Walnut is nut-based and made in a facility that processes tree nuts. Traditional, Maple Bacon, and Orange are all nut-free, so they're the safer default if you're buying for a group.
Know the shelf life you're committing to
Traditional, Maple Bacon, and Black Walnut last up to two years unopened, so there's no rush to use a bottle up. Orange has a shorter window once opened — plan to use it within a few months.
Don't start with Pecan
Pecan is part of the flavor lineup but is currently out of stock. If the toasted, nutty profile is what draws you in, Black Walnut is the closest available substitute and the better starting point anyway.
Buy the size that matches how often you'll use it
If you're still deciding between flavors, a single full-size bottle is a lower-commitment way to test the spirit-pairing idea than jumping straight to a case.
Ready to pick your first bottle
Match the flavor to what's already in your cabinet, start with Traditional if you're unsure, and go from there. You can browse the complete lineup, including the Old Fashioned-focused flavors, at Proof Syrup's Old Fashioned collection.
