Merge duplicate ingredients. You might find you have two
differently named ingredients that are in fact the same item.
This can happen when import from someone else'e database or
when more than one person works on a single recipe database
and two identical ingredients are created but with different names.
The ingredient merge option lets you select any numner of
identical ingredients and the program will replace all instances
of each ingredient in recipes, menus, etc with a single
selected ingredient. The program will also optionally delete
the unused ingredients after the merge is complete.