The ERN Carb Bar pack: 30g carbs, made in Ireland
Made in
Ireland
The ERN Carb Bar · coming soon

Race morning, sorted.

30g of carbs in a rice crisp square. Eat it before the gun.

Small first batch. The waitlist hears first, with the founding price. No card.

1M+ views on our videos100+ free plans sent8 ingredients
30gcarbs
<1gfat
<1gprotein
<1gfibre
~40gbar

Per bar. Final figures confirmed by lab testing before launch.

When you eat it

Race morning is the hardest meal of the year.

You're nervous, you're not hungry, and the gun is hours after breakfast. The bar fills the gap.

−3:00

Breakfast

Your usual, the one you've tested on long runs.

Pen

The Carb Bar

In the start pen or on the way. 30g of carbs, easy on a nervous stomach.

0:00

The gun

First 10K 5 to 10 seconds a K slower than goal.

+0:20

First gel

Then 30g every 30 minutes, with water.

Close-up of the ERN Carb Bar
8
ingredients
What's in it

Short enough to read in the start pen.

  • Crisped riceThe crunch, and most of the carbs
  • HoneyGlucose and fructose, which your gut takes in by different routes
  • Maple syrupFlavour, and more fast carbs
  • SugarBinds it, and it's quick fuel
  • Coconut oilCoats the rice so it stays crisp
  • Beef gelatineHolds it together. Not vegetarian, sorry
  • Sea saltTaste, and a little sodium
  • VanillaBecause it's a rice crisp square

Final recipe in testing. The waitlist gets the full label first.

Why it's different

What's in your kit bag at 7am?

Most race mornings run on whatever survived the hotel breakfast. Here's how the options stack up before the gun.

ERN Carb BarBananaPorridgeGel in the pen
Carbs, counted30gabout 25g, depends on the banananeeds a kettle and a bowl20 to 40g
Eats like food when you're nervous✓✓✓✕
Survives a squashed kit bag✓✕✕✓
Tastes like a treat✓✕✕✕
Short ingredient list8 ingredients✓✓varies
Before the gun

The bar

Nerves kill your appetite, and porridge doesn't sit well an hour out. A rice crisp square does. 30g of carbs, counted, so your first hour runs on a full tank.

After the gun

Your gels

Chewing at race pace is hard work. From 20 minutes in, it's 30g of gel every 30 minutes with water, like in our videos. The bar has done its job by then.

The Rice Crisp Graveyard

We've binned a lot of batches.

Keeping the inside crisp for weeks without adding anything you can't pronounce is the hard bit. Every failed batch goes on Instagram.

Rest in pieces.

Watch on Instagram →
Luke and JamiePhoto: Luke and Jamie, ideally in the kitchen with a tray of bars
Luke & Jamie
Who's making it

2 accountants who made a carb bar.

We're Luke and Jamie. We've done marathons, ultras and Hyrox, and we've stood in a lot of start pens with nothing we wanted to eat.

We make the marathon videos you may have seen, and we're making this bar because we wanted it ourselves. Ask us anything about it. We read every reply.

Luke & Jamie
Questions

Before you ask.

When can I buy it?

When the first batch is ready. The waitlist gets the date first, before we post it anywhere.

How much will it cost?

We'll tell the waitlist first. Everyone on it gets the founding price.

Where do you ship?

We'll confirm where we deliver to the waitlist first, before launch.

Can I eat it during the race?

We wouldn't. Chewing at race pace is hard work. Eat the bar before the start and use gels once you're running.

Is it vegetarian?

No. The gelatine is beef. The full allergen label goes to the waitlist with the final recipe.

Simple fuel for serious performance · Made in Ireland

The first batch is small.

Get on the list and you'll hear first, with the founding price.

Join the waitlist →