Final answer:
To substitute dried minced onion for fresh, use one-third the amount of dried as you would fresh. This adjusts for the concentrated flavor of dried onions, but consider adding more liquid to the recipe if necessary to compensate for the lack of moisture in dried onions.
Step-by-step explanation:
When substituting dried minced onion for fresh minced onion in recipes, it is important to keep in mind the relative strength of dried versus fresh. While herbs are the context provided for the flavor difference, onion follows a similar principle. Since dried onions are more concentrated, you would need to use less of them to replace fresh onions. A good rule of thumb is to use one-third the amount of dried minced onion as you would fresh minced onion. For example, if the recipe calls for one tablespoon of fresh minced onion, you would substitute with one teaspoon of dried minced onion.
Remember to consider the moisture that fresh onions would add to the dish, which dried onions will not. In some recipes, this may affect the texture or moisture content, requiring additional adjustments like adding a bit more liquid to compensate.