It's bad to waste food that is just slightly burnt.
Nancy is preparing for a banquet when she realizes that some bread she put in the oven has burnt edges.
Nancy wants to serve good-looking food.
Nancy cuts off the burnt parts of the bread and serves it.
Nancy throws the batch of bread away and starts a new batch.
The bread is delicious and the guests hardly notice the cut-off sections.
The food is ready 20 minutes late and the guests grumble because they must wait.