Parse quantity when it’s in the "name" of the grocery.
Suggestion engine needs to consider varying quantities of an item "half gallon milk", "gallon milk" to be the same stuff. They're both milk.
Data entered through Reminders app (in the past, via Siri, or on Mac, iPad, or iCloud.com) may contain quantity info.
When saving data back into reminders, everything has to become one string of text again.
A way to change the quantity once an item is added to your list
MAYBE: The quick "add grocery" flow adds the grocery as soon as you tap the item. Add a way to set quantity at that step? OR keep that as-is and rely on modifying quantity once it's on the list?
Goal: Don't complicate the UI in the simple case
Design problems to solve: