Social Media Wrap: Yo! Sushi unveils new retail item; Tim Hortons launches new Maple BBQ range; Zizzi pranks customers with 'scratch and sniff' billboards

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

Yo! Sushi unveils new retail item.

Tim Hortons launches new Maple BBQ range.

Zizzi sets up 'scratch and sniff' billboard prank for April Fools.