How to feed a cow seaweed

Our Gamechanger pattie all starts with the same grass-fed, free-range Aussie-reared black Angus. Like the cattle we use for our regular beef burgers. Still 100% natural, with no added hormones, preservatives or antibiotics.

The only difference? Natural Asparagopsis sea feed from our mates at Sea Forest.


It’s a native seaweed grown in Tasmania.

Don’t worry, we’ve got a whole explainer for you.

Find out more ⟶

Sounds sea-weird

It's not! The cows roam on grassy, green Flinders farmland, chomping a mix of fresh grass and that innovative seaweed pellet that massively reduces the burpin’ methane output.

How massive? Up to 67% so far – and we’re aiming for 90%.

Best part is, our Asparagopsis pellets are an all-natural feed. That means we can stay true to our 100% natural promise!

Plus, it’s still got that same juicy, beefy taste you love in your Grill’d burgs. Not a hint of seaweed, at all.

Wait, seaweed AND grass?


The pellet in their diet is enough to take a huge bite out of their overall methane emissions. That means we can still maintain the good animal welfare and fresh grazing lifestyle that makes cows happy (and healthy).

How do cows chow down?

First up, cows actually LOVE the seaweed pellets. They’re big fans of the taste.

For the actual feeding, we use a piece of equipment called a GreenFeeder machine. The cow comes up, puts its head into the covered trough to eat the seaweed pellets.

Because cows burp as they eat (rude), the same machine also measures the methane – and that’s how we know it’s working.

Wanna know more about the methane? See how the burps work:

Find out more ⟶

Why not feedlot?

It’d be easier – and cheaper – to feed the cattle their seaweed pellets in a grain-fed system, but that would mean sticking them in a crowded feedlot without much space to move. It would be easy to just add the seaweed pellets to the big ol’ grain feeding system.

But a feedlot doesn’t make for happy cows, and we’re not willing to compromise our animal welfare standards. Sustainability and accountability need to be in every step of the chain – or else it’s just bull.

See our stance on sustainability ⟶

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