Greencore has added again to its American food-to-go business with a deal for Chicago-based manufacturer HC Schau.

The Irish group is paying around $17m (£10.9m) for Schau, which supplies sandwiches and sushi to 7-Eleven in the Chicago area. In 2011 Schau generated sales of $32m (£20.5m).

Greencore – which earlier this year bought another 7-Eleven supplier, Marketfare – said it had also secured a $50m supply deal with the convenience giant to provide food-to-go on the east coast and mid-west.

“Schau, along with Marketfare, will allow us to take a strong step forward in executing the next stage of our US strategy,” said Greencore chief executive Patrick Coveney.

“Greencore now has a food-to-go platform in the US that will not only enable us to better serve our existing customers but also support what is a significant and exciting new business opportunity.”