I bet most things were discovered by accident like using yeast in bread or for fermenting fruit to make wine etc. One day I stirred a spoonful of sugar into a curry I was making and it really brought the flavour out and have done that ever since. Also finding out that fruit goes well with meat. Instead of going to the trouble of making apple sauce to accompany pork I cut up the apples and roast them aswell. Also good if you feel a little bit lazy.