Galley can calculate the food cost of a recipe for each of your locations. This calculation is done based on the availability of your vendors for each location.
When on a recipe's page, you can easily change for which location you are viewing a recipe's food cost. To do so, click the location dropdown at the top righthand corner of your screen, between the LEARN and Profile buttons. Then, select the location at which you would like to view the food cost.
Note that some recipe costs may not appear if the ingredients of the recipe are not linked to vendor items available to the given location.
To learn how to link vendor(s) with location(s), check out this article.