Lay's "Do Us a Flavor" campaign is an international marketing initiative that has been run by Lay's, a popular brand of potato chips (crisps) owned by Frito-Lay, a subsidiary of PepsiCo. The campaign has been launched in various countries, including the United States, Canada, the United Kingdom, and others, with slight variations in the name and execution. Here's an overview of the campaign:

1. Soliciting Flavor Ideas: The core idea of the campaign is to invite consumers to submit their ideas for new potato chip flavors. Participants are encouraged to get creative and come up with unique and innovative flavor combinations.

2. Contest Format: Lay's typically runs the campaign as a contest, allowing people to submit their flavor ideas through various means, such as online submissions or social media. The contest usually has a submission period, after which Lay's selects a shortlist of finalists.

3. Public Voting: Once the finalists' flavors are produced and packaged as limited-edition chips, Lay's invites the public to vote for their favorite flavor. This voting process is often conducted online or through other promotional means.

4. Winner Announcement: The flavor with the most votes is declared the winner, and Lay's then produces and markets that flavor as a limited-time offering.

5. Engagement and Promotion: The campaign generates excitement and engagement among Lay's consumers, encouraging them to try the new flavors, vote for their favorites, and share their experiences on social media.

6. Variations Across Countries: While the core concept of "Do Us a Flavor" remains the same, Lay's adapts the campaign to suit the preferences and culture of each country in which it's launched. This includes selecting flavor finalists that reflect regional tastes and preferences.

The "Do Us a Flavor" campaign has been successful in engaging consumers, driving brand awareness, and generating social media buzz. It also allows Lay's to experiment with new and unconventional flavors, some of which did become permanent additions to their product lineup if they prove popular.

Please note that the specific details and variations of the campaign did change from year to year and from one country to another, so it's a good idea to check the latest Lay's marketing initiatives for the most up-to-date information.