[TeeJay942]

Anylist was made for this. It's a YC funded company, but it's great because the sync is perfected, it has a calendar meal plan, recipe lists, those recipe lists can be populated from most recipe websites, works great on mobile and desktop, etc.

The biggest reason I used this over Wunderlist (which also has perfect sync) is there is no way to make two separate lists in Wunderlist and then combine them. This is important because like me you might try to make a separate list for a separate recipe, but it's a no go unless you are making and modifying one grocery list anew for each trip.