The most common mistake in an old fashioned is a sugar cube that never fully dissolves. You end up with a gritty layer at the bottom of the glass and a first sip that tastes like whiskey and nothing else. A syrup such as Traditional Proof Syrup solves that in one step, because the sugar is already dissolved and every sip tastes the way the last one did.
What makes a great old fashioned sweetener
The old fashioned is a short list: spirit, sugar, bitters, water. The sugar slot is where most of the variation between one bar and the next comes from, and it is the part you have the most control over at home. The sweetener is not just there to add sweetness. It sets the texture, it carries the bitters, and it decides how the drink tastes from the first sip to the last.
A sugar cube is the traditional answer. You soak it with bitters, add a splash of water, and muddle it into a paste before the whiskey goes in. Done patiently, it works, and the ritual is part of the appeal. Done quickly, it leaves crystals behind. Syrup skips the problem. Here is how the two compare in practice:
- Dissolving: a cube needs time and muddling, while syrup is dissolved from the start and blends in cold.
- Consistency: every cube is a slightly different size and every muddle is a slightly different effort. Syrup is measured with a jigger, so drink five tastes like drink one.
- Speed: syrup saves a minute per drink, which adds up fast when you are making rounds.
- Ritual: the cube wins. If you enjoy the muddling, keep doing it.
For most home bartenders, the deciding factor is consistency. A drink you can repeat is a drink you can improve, and that is much easier to do with a measured pour than with a cube.
Old Fashioned With Syrup Recipe
Ingredients
- 2 oz bourbon or rye whiskey
- 1/4 oz Traditional Proof Syrup
- 2 dashes aromatic bitters
- 1 wide strip of orange peel
- 1 large ice cube
Instructions
- Add the whiskey, syrup, and bitters to a mixing glass filled with ice.
- Stir for about 20 seconds, until the glass is cold and lightly frosted.
- Strain over one large ice cube in a chilled rocks glass.
- Express the orange peel over the drink, rub it around the rim, and drop it in.
A standard sugar cube is roughly a teaspoon of sugar, and a quarter ounce of syrup lands in the same neighborhood, so it makes a fair swap. Taste and adjust from there. Our breakdown of how much syrup goes in an old fashioned goes through the ratios in more detail.
Why the sweetener matters
Proof Syrup is made in small batches from raw cane sugar and cooked, not just mixed. That gives it body, which is the one thing a dissolved cube and a thin store-bought syrup often lack. A quarter ounce adds weight to the whiskey rather than just sweetness, and the finish stays clean instead of lingering.
In other words, syrup does not have to mean a step down from the cube. A good one gives you the same sweetener, already dissolved, with texture to spare. If you want the full walkthrough, see how to make an old fashioned with Proof Syrup.
Variations
Black Walnut
Replace the Traditional with Black Walnut Proof Syrup. The walnut flavor is nutty and slightly dry, and it sits well under rye.
Ingredients
- 2 oz rye whiskey
- 1/4 oz Black Walnut Proof Syrup
- 2 dashes aromatic bitters
- 1 wide strip of orange peel
Best for: rye drinkers who want a drier, nuttier old fashioned.
Maple Bacon
Use Maple Bacon Proof Syrup for a smoky-sweet version that cannot be made with a cube at all.
Ingredients
- 2 oz bourbon
- 1/4 oz Maple Bacon Proof Syrup
- 2 dashes aromatic bitters
- 1 wide strip of orange peel
Best for: bourbon fans and anyone who wants a breakfast-leaning drink with real depth.
Traditional, Built in the Glass
If you like the feel of the old method, keep it and use syrup in place of the cube. Everything goes straight into the rocks glass, with no mixing glass to wash.
Ingredients
- 2 oz bourbon
- 1/4 oz Traditional Proof Syrup
- 2 dashes aromatic bitters
- 1 wide strip of orange peel
Best for: a quick weeknight drink where you still want the old-school build.
Technique tips for sugar cubes and syrup
If you use a cube, dissolve it first
Soak the cube with bitters, add a teaspoon of warm water, and muddle until you see no crystals. Only then add the whiskey and ice. Whiskey is a poor solvent for sugar, so a cube that goes in dry will stay undissolved.
Measure syrup, do not eyeball it
A free pour is the fastest way to overshoot. A jigger or a marked bar spoon gets you the same drink every time.
Stir until the glass frosts
Syrup blends easily, but the drink still needs dilution to taste right. Twenty seconds on good ice is a reasonable target, and a large cube in the glass keeps the pace of dilution under control afterward.
Match the glass to the drink
A heavy rocks glass with room for one large cube keeps the drink cold without watering it down. If you want a refresher, read our guide to types of glasses and when to use each.
Try it side by side
The easiest way to settle this is to make one of each and taste them next to each other. Pick up a bottle from the old fashioned syrups collection, or browse everything we make, and see which one you reach for the second time.
