Social Media Wrap: Costa Coffee's bubble drinks; Burger King's Formula 1 giveaway; Papa Johns new pesto range

Find out what QSRs have been up to on social media this week.

Costa Coffee unveils new Bubble drink range.

Burger King partner with Coca-Cola and racing team McLaren to giveaway signed McLaren Formula 1 caps.

Papa Johns releases new pesto range as a limited-time offer.