Across Australia’s food manufacturing sector, sustainability has shifted from a marketing aspiration and organisational alignment, to a commercial requirement.

With mandatory climate disclosure laws coming into force on January 1, 2026, large scale retailers, bakers and food  processors will need to begin providing detailed, auditable emissions data. And, by 2027, Scope 3 emissions generated across supply chains will also become mandatory.

Smaller manufacturers are not yet directly captured by the legislation, but the direction of travel is unmistakable: if you sell into major retailers or FMCG companies, you will be expected to meet their climate reporting standards.

This raises a pressing question: how do you accurately measure and reduce the emissions embedded in your ingredients in a commercially realistic way?

A new study, Reimagining Bread, suggests that the path to compliance and competitiveness may start with simply choosing the right flour. As the backbone of nearly every product in the bakery aisle, flour is one of the most carbon-intensive parts of the supply chain. Yet for decades, its upstream emissions have been largely invisible.

The study is a 12-month collaboration between researchers from Deakin University, standards body Certified Sustainable, Gunnedah-based flour mill Wholegrain Milling Co. and certified bakers Infinity in Sydney and Rustica in Melbourne. It tracked greenhouse gas emissions from the grain paddock through flour processing to the end loaf.

The project undertook full auditability: all of the wheat grain was independently certified, every batch of flour was traceable, and emissions were modelled under the National Greenhouse and Energy Reporting framework and compared against conventional benchmarks.

The results were striking.

• Up to 77% emissions reduction at the grain-growing stage, achieved through sustainable and regenerative farming practices verified under the Certified Sustainable standard.
• A 55% reduction through the milling process, due to increased energy efficiency, adoption of renewable sources, the emissions profile of the grain used, and improved inputs and transparent data collection.
• Baking emissions were reduced by a further 22–26% per kilogram of bread reflecting the combined impact of lower-emission flour and bakery-level inputs.

For bakers and FMCG food processors, this is exactly the kind of evidence-based reporting that large retailers, customers and investors are looking for.

Why this matters for food manufacturers

 Whether you are a large commercial food manufacturer with reporting obligations or a smaller player selling into retail channels, sustainability expectations are converging. Retail partners increasingly require ingredient suppliers to demonstrate emissions transparency, data integrity and emissions reduction pathways.

Switching to verified sustainable flour helps manufacturers in three practical ways:

1. Procurement readiness

Retailers and FMCG brands are reshaping their procurement frameworks to meet disclosure requirements. Ingredient suppliers who can provide certified, traceable and audited emissions data stand out straight away. By using Certified Sustainable flour, you are already speaking the same language as your buyers: Scope 3 baselines, verified reductions and clear methodologies. Positioning yourself as a partner, not a compliance risk.

2. Building capability without operational disruption

Many processors assume that emissions tracking is technically complex or commercially burdensome. The Reimagining Bread working group tested this assumption. Participating bakeries Rustica and Infinity integrated sustainable flour into production with no operational disruption, while also recording improvements in energy efficiency, reduced waste and stronger product differentiation.

It demonstrated that bakeries can achieve verifiable emissions reductions without changing equipment, staff or business model simply by choosing a sustainable flour.

3. Proven scalability

Perhaps most importantly for the sector, the model is already operating at scale. Wholegrain Milling Co. supplies sustainable flour to many bakeries nationwide. The supply chain, certification standards and audit mechanisms are mature. For an industry wary of sustainability initiatives that sound promising but fail to scale, this matters.

The missing link: ingredient-level data

 For years, the food sector’s climate conversation has focused on packaging and waste. Whilst these are important, they account for a small part of the overall footprint. The majority of emissions occur before ingredients reach the factory gate, in farming, processing and upstream logistics.

Yet ingredient-level data remains scarce. Without it, customer reporting relies on generic emissions factors that obscure the sources of climate impact and limit opportunities for improvement.

That’s exactly where sustainable flour’s transparent farm-to-mill traceability changes the game. It lets bakers:

• Replace general estimates with actual numbers
• Demonstrate measurable progress to customers
• Give retailers verifiable data for their reporting requirements
• Confidently communicate sustainability claims without reputational risk
• Build resilient, low-carbon supply chains aligned with future regulation.

In a world where greenwashing is getting called out, audit-ready numbers are a competitive advantage.

The Reimagining Bread study shows that what happens on the farm and in the mill has a direct commercial impact on bakery margins, brand reputation and customer relationships. By reforming upstream agricultural and milling practices, food manufacturers can create downstream value for retailers, customers and even shareholders.

The model also offers reassurance to an industry wary of costly or disruptive interventions. Flour is an ingredient already central to production; replacing it with a certified, lower-emissions alternative does not require structural change. It is a practical first step towards climate-aligned operations.