Greenwashing in the Dairy Aisle: How to Know What's Real

Sustainability claims are everywhere. Here's how to read between the lines.

Walk down any dairy aisle these days and you’ll be met with a wall of green labels, leaf icons, and words like “eco-friendly,” “sustainable,” and “responsible.” It all sounds great. But what does any of it actually mean?

The truth is, sustainability claims in food packaging are largely unregulated. There’s no universal standard that a brand has to meet before they can print a green leaf on their label. And that means it’s on consumers to ask a few smart questions.

We’re not here to call anyone out. But we do think consumers deserve straight answers, so let’s start with the biggest assumption we hear all the time.

The Glass Myth

“Why don’t you use glass bottles? They’re better for recycling!”

We hear this a lot, and we completely understand why. Glass feels natural, clean, and permanent. Like it belongs to a simpler, more sustainable era. But when you look at the actual research, the picture gets more complicated.

Glass is one of the most energy-intensive materials to produce. The kilns that melt sand, soda ash, and dolomite into glass must run at extremely high temperatures constantly — they can’t just be switched off between batches. All of that heat requires an enormous amount of energy, much of it fueled by fossil fuels, and the process releases significant carbon dioxide along the way.

There’s also a growing shortage of the specific type of sand needed to make glass. It’s not desert sand, but a particular kind mined from riverbeds and quarries. That mining causes land degradation, water runoff, and serious health risks for workers, including a lung condition called silicosis.

And recycled glass? It helps, but less than most people think. To truly benefit from recycled glass, the same container needs to be used again and again. Melting down and reforming glass into something new still requires those same energy-hungry kilns. A lot of glass never makes it to a recycling facility at all, ending up as landfill cover instead.

Meanwhile, plastic, which we use for our pint bottles and yogurt containers, ranks better than both new and recycled glass in life cycle assessments. It’s considerably lighter, requires less energy to produce, and is less carbon-intensive to transport. That’s not an argument against glass for everything, but it demonstrates glass isn’t always the greener choice.

What 'Eco-Friendly' Actually Means

Typically, genuinely sustainable packaging decisions rely on a Life Cycle Assessment (LCA). An LCA is a process that evaluates a material’s impact from raw material extraction through manufacturing, transport, use, and end of life. It looks at carbon emissions, water use, energy consumption, toxicity, and more.

For our paperboard cartons, we use Tetra Pak, a company that has commissioned and published independent, peer-reviewed LCA studies since the 1980s, all conducted in line with ISO 14040 and 14044 international standards. Across multiple studies and regions, a consistent finding has emerged: beverage cartons show the lowest or equal-lowest carbon footprint across major packaging types. The primary reason is that cartons are made mostly from renewable materials and require less energy-intensive production than alternatives like glass.

That’s not our claim. It’s theirs, backed by independent science. And it’s why we chose it.

Questions Worth Asking

Next time you’re standing in the dairy aisle, here are a few things worth considering:

• Is the packaging recyclable — and actually recycled in your area?

• How heavy is it?

• How much energy did it take to make?

• Where did it come from?

There’s a big difference between a material you can recycle in theory and one your local facility will actually process. Heavier packaging means more fuel burned in transport — costs that never show up on a label. Energy-intensive materials like glass often surprise people here. And local sourcing can reduce emissions in ways that packaging choices alone can’t fully compensate for.

What We Do and Why We'll Always Tell You

At Snowville Creamery, we use paperboard cartons for our milk without plastic screw caps, because even a small cap raises a carton’s global warming potential. For products where cartons aren’t the right fit, we use what research supports for that application.

We don’t have a giant marketing budget or a team of sustainability consultants crafting our green image. What we have is a genuine commitment to making decisions we can stand behind, and the willingness to explain exactly why we made them. Even when the answer is more complicated than a leaf icon on a label.

So ask us anything. We’ll tell you the truth.

Further Reading

Tetra Pak's LCA