One lasagna. Not three.

1. Pick the occasion, the place and how many of you there are.
2. The list writes itself: food, drinks and extras, with quantities already worked out.
3. Send it to your group chat in one tap.
4. Everyone taps “I'll bring it” on what they bring: no doubles.
5. Afterwards, split the costs and spin the wheel to see who does the dishes.

Turin, Italy. A Sunday lunch with friends and family: eighteen people, two tables pushed together and a group chat on fire.

The result: three lasagnas, two tiramisus and no bread at all. Nobody brought ice, there were twelve chairs for eighteen people, and the mosquitoes were delighted.

The next day, somewhere between lasagna leftovers, the idea arrived: a list that writes itself, where everyone claims one thing and nobody brings the same. No app to download, no account. Just a link in the group.

Today Onelasagna works in ten countries and five languages. The rule is still the one from that Sunday: one lasagna is enough. Bring the other two next time.

A poll tells you who's bringing the lasagna. Onelasagna also tells you how much meat 14 people need, that you'll want extra chairs, and that outdoors you'll need bug spray.

Occasions are local to where you are: Thanksgiving and the Fourth of July in the US, Bonfire Night in the UK, a summer Christmas in Australia, each with its own typical items.

And when the party's over, the same list splits the costs, builds a PayPal link and spins a wheel to decide who does the dishes.