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Produced by Australian distillers Top Shelf International (TSI), Act of Treason is a spirit made exclusively from Agave tequilana grown on the Eden Lassie farm near Airlie Beach in Queensland.

It features notes of citrus, cut grass and lime peel on the nose, with a long finish of agave and grapefruit on the palate.

The drink is the product of University of Adelaide research, funded by a three-year ARC Linkage grant which began in 2020.

鈥淭SI set out to improve their production process and better understand the unique potential of Australian agave, while integrating sustainable farming practices and uncovering its regional flavour profile,鈥� says Professor Rachel Burton, from the University of Adelaide鈥檚 School of Agriculture, Food and Wine, who led the project.

鈥淭he combined efforts of the University of Adelaide and TSI are centred on better understanding agave plant growth and exploring sustainable agave farming techniques.鈥�

Eden Lassie鈥檚 farm was selected for its alignment with the 20掳 South latitude, a geographical position which mirrors the famous tequila-producing region of Jalisco, Mexico, which sits at 20掳 North latitude.

The site features a comparable climate to that of Jalisco, fostering ideal growing conditions for the Agave tequilana, which thrives in full sunlight with many hours of sun exposure each day.

"Preliminary laboratory tests using spectroscopy on agave spirits revealed regional differences, akin to what can be observed in wine," says the University of Adelaide鈥檚 Dr Juanita Lauer, who contributed to the project.

鈥淚t is known from research in viticulture that factors like altitude, soil type, and local climate conditions play pivotal roles in the taste of the end product, and our collaborative endeavour aims to shed light on these intricacies for agave spirits.鈥�

The collaborative research is not solely focussed on what鈥檚 in the bottle; TSI and the University of Adelaide are also seeking a better understanding of agave plant growth and exploring sustainable agave farming techniques.

鈥淚n a field trial, different ground covers and microbial inoculants are being examined to understand their effect on soil health and to reduce fertiliser input,鈥� says Dr Matthias Salomon from the University鈥檚 School of Agriculture Food and Wine, who was part of the research team.

鈥淧reliminary research indicates that mulch derived from agave leaves provides distinct benefits for plants and performs better than other more commonly used mulch materials.

鈥淎part from aiding plant growth, this mulch appears to positively impact soil health, with data suggesting that agave mulch can help increase soil pH, making it a potential amendment for restoring acidic soils.鈥�

Researchers are also investigating agave鈥檚 potential for long-term carbon sequestration and its positive effects on nutrient absorption in soil.

鈥淎s this research continues, we will learn more about how to create a drink with a distinctive Australian touch and how agave plants can be used to improve soil health and sustainability in Australia鈥檚 agricultural landscape,鈥� says Professor Burton.