What is prepared mustard?
"When a recipe calls for “prepared mustard” what does it mean?"
Prepared mustard simply refers to the condiment, or spread, that comes in a bottle. Dry mustard refers to the powder, and mustard seeds are the whole, small seed that is ground to make the powder (and which can also be used whole for texture).
This recipe for Sweet Mustard Chicken Thighs is a great example of combining prepared mustard with brown sugar and spices to make a sweet and tangy basting sauce for chicken.