pixel_player75076735
Screenshots are very useful to make it easier for other players to be able to assist you.
I'm guessing that the 3rd star you are missing is for the "Achievements" of collecting the required number of "Tobacco Pipes".
There are 2 repeatable mines in "Detective Stories 2".
One is called the "Tea House" where you collect "Tea Leaves" & the other is called the "Old Tobacco Shop" where you collect "Tobacco Pipes" from (see screenshot from the relevant Wiki page below).
To get the 3rd star you need to collect a total of 74 "Tobacco Pipes" to complete the required "Achievements" (see screenshot from the relevant Wiki page below).
The "Tea Leaves" that you collect can be made into 2 recipes in your kitchen (see screenshot from the relevant Wiki page below).
However I would not suggest that you use your "Tobacco Pipes" in making recipes as there is some fantastic camp equipment available for both regeneration & capacity in "Detective Stories 2".
The beauty of these Older Unsegmented Stories being available in the shop for the current cost of 100 gems means that you can purchase these Older Unsegmented Stories multiple times over & over to gain the maximum number of each pieces of the good, better & best camp equipment that the stories have available.
I have done some spreadsheets in relation to the camp equipment available for all the Older Segmented & Unsegmented Stories that are currently available in the shop to purchase for either 100 or 500 gems.
You can check out those spreadsheets here if you like
https://forum.pixelfederation.com/diggysadventure/d/187533-camp-equipment-spreadsheets-for-older-stories-available-in-shop/9
