A very simple example of the recipe/bag model might be for a single user who maintains the following bags:

• recipes - tiddlers related to cooking recipes
• work - tiddlers related to work
• app - common tiddlers for customising TiddlyWiki

Those bags would be used with the following recipes:

• recipes --> recipes, app - wiki for working with recipes, with common custom components
• work --> work, app - wiki for working with work, with common custom components
• app --> app - wiki for maintaining custom components

All of this will work dynamically, so changes to the app bag will instantly ripple into the affected hosted wikis.