Stepping Stone 5.1
Find new flavors, new restaurants, new cuisines, try something you didn't like as a kid and see if your palate has changed. Experiment with pairing different flavours. Potato chips on sandwiches, pretzels with chocolate and peanut butter and pickle sandwiches are some of my favourites! Below are some wonderful pairings for you to start with.
http://www.huffingtonpost.com/2015/04/21/weird-flavor-pairings_n_7110186.html
http://www.buzzfeed.com/emofly/23-unexpected-flavor-combos-that-taste-amazing#.mgLZn2KGN
http://spoonuniversity.com/uncategorized/18-weird-food-combinations-actually-delicious/
http://www.bonappetit.com/test-kitchen/ingredients/article/unexpected-food-pairings
The links are more information for you on the differents tastes.
http://www.scienceofcooking.com/about_taste.htm
http://www.eattasteheal.com/ETH_6tastes.htm
http://www.livescience.com/17684-sixth-basic-taste.html