First, make sure Siri is enabled under Paprika's Settings -> Enable Siri.
Now, you can use Siri to add items to your grocery list in Paprika. For example:
"Add milk to my grocery list in Paprika."
You can add multiple items at the same time:
"Add butter, flour, and eggs to my grocery list in Paprika."
You can add items with a quantity specified:
"Add 1 cup brown sugar to my grocery list in Paprika."
And if you have multiple grocery lists, you can also specify which list to add to:
"Add eggnog to my Christmas Shopping list in Paprika."