I like this article and the link..

http://www.foodmanufacture.co.uk/NPD/Top-five-tips-for-millennial-engagement

Thank you for your answer 

You are welcome Victoire..

Victoire

I was Danoner for ten years. Big challenge what you ask: SEE THIS

1-  http://www.forbes.com/sites/forbesinsights/2014/09/05/group-danone-not-digital-marketing-but-marketing-in-a-digital-era/#446dc5ef6137

2-  http://www.cnbc.com/2015/08/10/heres-whats-behind-the-sudden-surge-in-products-for-millennials.html

3-  http://www.just-food.com/the-just-food-blog/danone-goes-beyond-digital-marketing_id2523.aspx

4-  http://strategyonline.ca/2015/02/03/oikos-daydreams/

Good Luck!

pedro