Agave Syrup
Agave syrup is a sweetener made from the juice of the agave plant, heated or treated with enzymes until its stored sugars break down, leaving a syrup that is mostly fructose. Our recipes pour it neat in the Spicy Margarita and the Picante de la Casa, and cut 1:1 with warm water by volume in the Tommy’s Margarita; diluted, it keeps two weeks in the fridge.
Quick Facts
The pantry for the bottle, the fridge for the diluted mix, which we keep for two weeks.
None of the 14 listed allergens.
About Agave Syrup
Flavour Profile
Primary Flavours
Tasting Notes
Neutral-clean sweetness with a faint vegetal echo of the plant: sugar with an agave accent rather than a flavour of its own.
It is cooked agave juice, mostly fructose
The syrup starts as juice pressed from the core of the plant, the same piña that tequila is distilled from. The juice is filtered and then heated, or treated with enzymes, to break the long fructose chains it stores into simple sugars, and concentrated until it pours a little thinner than honey. Blue agave syrup ends up about three quarters sugar, with fructose well ahead of glucose: that is why it tastes sweeter than sugar syrup at the same measure. Agave nectar is the same product under a softer name.
The Tommy’s Margarita made it a bar staple
Tommy’s Mexican Restaurant in San Francisco, founded in 1965 by Tommy and Elmy Bermejo, calls itself the birthplace of the Tommy’s Margarita: tequila, lime and agave, with no orange liqueur. The IBA now lists it. Our recipe cuts the agave 1:1 with water, while the Spicy Margarita and Mezcal Margarita pour it straight, and the Picante de la Casa takes the most of all.
Agave syrup as our recipes pour it
Tommy’s Margarita
- Measure
- 30ml
- Form
- Diluted 1:1 by volume
- Agave in the glass
- About 15ml
Picante de la Casa
- Measure
- 20ml
- Form
- Neat
- Agave in the glass
- 20ml
Spicy Margarita
- Measure
- 15ml
- Form
- Neat
- Agave in the glass
- 15ml
Mezcal Margarita
- Measure
- 15ml
- Form
- Neat
- Agave in the glass
- 15ml
Añejo Old Fashioned
- Measure
- 7.5ml
- Form
- Light agave syrup
- Agave in the glass
- 7.5ml
Oaxacan Old Fashioned
- Measure
- 5ml
- Form
- Neat, one barspoon
- Agave in the glass
- 5ml
| Drink | Measure | Form | Agave in the glass |
|---|---|---|---|
| Tommy’s Margarita | 30ml | Diluted 1:1 by volume | About 15ml |
| Picante de la Casa | 20ml | Neat | 20ml |
| Spicy Margarita | 15ml | Neat | 15ml |
| Mezcal Margarita | 15ml | Neat | 15ml |
| Añejo Old Fashioned | 7.5ml | Light agave syrup | 7.5ml |
| Oaxacan Old Fashioned | 5ml | Neat, one barspoon | 5ml |
Neat in the cupboard, diluted in the fridge
We keep neat agave for months once opened, at room temperature. Cut 1:1 with warm water it pours more easily and measures cleanly, but it then has enough free water to spoil, so it goes in the fridge and keeps two weeks, the same as simple syrup. Label the diluted bottle: it is half the strength of the neat one and looks the same. Light agave suits tequila and mezcal sours; the darker grades belong in stirred drinks, if anywhere.
Using Agave Syrup
Usage
Neat, 5 to 20ml: a barspoon in the Oaxacan Old Fashioned, 15ml in the Spicy and Mezcal Margaritas, 20ml in the Picante de la Casa. Diluted 1:1, 30ml in the Tommy’s Margarita, which is 15ml of agave. Read the line for which form it means.
House Recipe
Ingredients
- 100ml light agave syrup
- 100ml warm water
Method
- Stir the agave syrup into the warm water until evenly mixed.
- Cool, bottle and label it as diluted, with the date.
- Refrigerate it.
Food safety
Diluted, it no longer keeps the way the bottle does: refrigerate it, and discard it if it clouds or fizzes.
Pro Tip
If an agave drink tastes sweet but flat, cut the syrup by 5ml rather than adding lime. Fructose reads sweeter than sugar, so a small overpour shows more than the same overpour of simple syrup would.
Top Tips
- Check the line before pouring: our Tommy’s Margarita uses agave cut 1:1 with water, most of the others pour it neat.
- Buy light agave syrup for margaritas. Amber and dark carry a caramel note that crowds lime.
- Label a diluted bottle as diluted. It looks like the neat syrup and is half as strong.
- Keep the neat bottle in the cupboard and the diluted one in the fridge, where it keeps two weeks.
Possible Substitutions
- Simple Syrup: works everywhere, loses the like-with-like logic
- Honey Syrup: warmer and more floral
Production Method
Juice from the core of the agave plant, filtered, then heated or treated with enzymes to break its stored fructans into simple sugars, and concentrated to a syrup. Light, amber and dark grades differ in how far they are processed.
More to explore
Common Questions
What is agave syrup?
Is agave syrup good for margaritas?
Should I dilute agave syrup?
How much agave syrup replaces simple syrup?
Light or amber agave syrup?
How long does agave syrup keep?
Sources.
Correct as of 19 October 2026.
- Tommy’s Mexican Restaurant (tommysmexican.com), “Tommy’s Mexican Restaurant” (owner’s page: founded 1965 by Tommy and Elmy Bermejo; the birthplace of the Tommy’s Margarita).
- Tommy’s Mexican Restaurant (tommysmargarita.com), “Tommy’s Margarita Mix” (owner’s page: San Francisco; in the Bermejo family since 1965; sweetened only with agave nectar, no orange liqueur).
Made with Agave Syrup
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Updated 19 October 2026