We don't know whether it's the subtle nutty flavours, the soft and supple texture, or those characteristic round holes – but there's something about Jarlsberg that keeps us coming back for more.

That's the reason that Jarlsberg's been the world's favourite Norwegian cheese for more than six decades and counting, and one whose roots stretch back a century or more before that. It's a cheese that's straightforward but also complex; delicious, but versatile, too.

Its story began in a university laboratory – the Norwegian Agricultural University, to be precise – where a research project culminated in a partnership with a huge dairy cooperative called TINE, and Jarlsberg cheese was born.

The recipe is famously elusive – while there are many cheesemakers around Europe and beyond, only a handful of people know the secret behind what we've come to know as Jarlsberg.

It involves being extremely picky about milk (only the freshest will do), and there's a bit of alchemy in the mix – the process that imbues the cheese with both its distinctive holes and its sweet flavours involves bacteria, miniature explosions, and a specific maturation process, too.

Yep, it's fair to say that Jarlsberg is a cheese with as much culture as it has flavour, which is what makes it the perfect partner for Regent's Park's Open Air Theatre.

To celebrate the partnership, Jarlsberg is offering one lucky reader four tickets to any show at Regent's Park's Open Air Theatre and a 10kg wheel of cheese, while 19 runners up will win a wedge of Jarlsberg cheese

To enter, simply answer the question below. 

jarlsberg.comopenairtheatre.com

The question is: How many people know the secret to Jarlsberg® cheese?

Competition closes: 12th May 2017

By entering, you agree to receive Foodism's weekly newsletter that includes the latest food inspiration, product news and competitions.

By entering, you agree to be contacted by Jarlsberg.

The Jarlsberg® Open Air Theatre Giveaway! competition is open to entrants based in the UK only, excluding employees of Norseland Ltd, TINE SA and TINE International.

No purchase necessary.

The promotion will end on the 12 May 2017 at 08:00am.

3 winners will be selected at random.

The winners will be contacted at the end of the promotion. Receiving their prize(s) within 30 working days after providing a full UK postal address.

Norseland Ltd does not take responsibility for any entries that have not been submitted due to lost connections, failed computer transmissions or technical failures.

There is one prize of four tickets to a Regent's Park Open Air Theatre production this summer, as well as 19 runners up prizes of Jarlsberg® cheese (wedge).

Prize valid between 19 May and 16 September 2017. No cash prize alternative. Accommodation NOT included. All prize elements are subject to availability. The Open Air Theatre terms and conditions, including the weather policy, are available at openairtheatre.com/terms

In the event of a dispute Norseland Ltd will have the final decision on how to proceed.

Good luck!

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