You'll want to link to your own grocery list blog / web page.
If
New check-in at category
This Trigger fires every time you check in to a venue in a specific category on Foursquare or Swarm. It only works with public check-ins.
Then
Send a notification from the IFTTT app
This action will send a notification to your devices from the IFTTT app.
Discover more time saving integrations for Notifications and Foursquare