there are things in the culinary arena that can be substituted by different ingredients. so if you know a good/better substitute of an ingredient just post it here. there are lots of good ideas around the world and im curious to see what people have come to learn
my contribution is:
ingredient: oil (for baking)
substitute: applesauce.
use in equal amounts in substitution and it makes a recipe lower in fat content plus imo makes the recipe more moist.